Shopping online can be a great way to save time and money, but it can also be a bit daunting if you’ve never done it before. John Lewis is one of the most popular online retailers ...Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky) This page titled 4.1: Lewis Electron Dot Structures is shared under a CK-12 license and was authored, remixed, and/or curated by CK-12 Foundation. Ionic substances are completely held together by ionic bonds. The full charges of the ions (for example, Na+ and Cl− in sodium ...To determine the Lewis structure for In+, we need to follow a few steps: 1. Calculate the total number of valence electrons: In (Indium) is in group 13 of the periodic table, so it has 3 valence electrons. Since In+ denotes the In ion with a positive charge, subtract one electron to account for the +1 charge.The final Lewis structure for SiCl2Br2 will have Si as the central atom with a single bond to each Cl and Br atom. Si will also have one lone pair of electrons around it. There will be two lone pairs on each Cl atom and one lone pair on each Br atom. The resulting Lewis structure should look something like this:Draw the Lewis dot structure for SO32-. Determine the electron geometry and molecular shape of this molecule. Draw a Lewis dot diagram for NF_2H and use the oxidation state method of electron bookkeeping to determine how many electrons each atom should be assigned. Draw the Lewis dot structure for H2O and provide the following information. a.Lewis Symbols. At the beginning of the 20 th century, the American chemist G. N. Lewis (1875–1946) devised a system of symbols—now called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds.Each Lewis dot symbol consists of the … Draw Lewis dot structure for the following molecule. Draw Lewis dot structure for the following molecule. [N(CH(CH_3)_2)_2]^-Draw a Lewis structure for one important resonance form of HBrO_4\ (HOBrO_3). Include all lone pair electrons in your structure. Do not include formal charges in your structure. The final Lewis structure for SiCl2Br2 will have Si as the central atom with a single bond to each Cl and Br atom. Si will also have one lone pair of electrons around it. There will be two lone pairs on each Cl atom and one lone pair on each Br atom. The resulting Lewis structure should look something like this:The Lewis dot symbol represents the number of valence shell electrons present in the atom of an element. The electrons are represented by dots over the symbol. The Lewis …May 22, 2023 · Step #1: Calculate the total number of valence electrons. Here, the given molecule is SBr2 (sulfur dibromide). In order to draw the lewis structure of SBr2, first of all you have to find the total number of valence electrons present in the SBr2 molecule. (Valence electrons are the number of electrons present in the outermost shell of an atom). Nov 13, 2023 · Steps. Use these steps to correctly draw the SOCl 2 Lewis structure: #1 First draw a rough sketch. #2 Mark lone pairs on the atoms. #3 Calculate and mark formal charges on the atoms, if required. #4 Convert lone pairs of the atoms, and minimize formal charges. The Lewis structure for the molecule SiCl2Br2 is drawn by following a set of guidelines. Firstly, Silicon (Si) is the least electronegative and is chosen as the central atom and the others are arranged around it.Nov 4, 2023 · The Lewis structure for the molecule SiCl2Br2 is drawn by following a set of guidelines. Firstly, Silicon (Si) is the least electronegative and is chosen as the central atom and the others are arranged around it. PROBLEM 4.2.4 4.2. 4. Methanol, H 3 COH, is used as the fuel in some race cars. Ethanol, C 2 H 5 OH, is used extensively as motor fuel in Brazil. Both methanol and ethanol produce CO 2 and H 2 O when they burn. Write the chemical equations for these combustion reactions using Lewis structures instead of chemical formulas. Chemistry questions and answers. draw the lewis structure for SiCl2Br2. draw the molecule by placing atoms on the grid and connecting them with bonds. include all lone pairs of electrons. A step-by-step explanation of how to draw the CS2 Lewis Dot Structure (Carbon disulfide).For the CS2 structure use the periodic table to find the total numbe...Science. Chemistry questions and answers. How do you draw a Lewis Structure for SiCl_2Br_2? This problem has been solved! You'll get a detailed solution from a subject …Allison Soult, Ph.D. (Department of Chemistry, University of Kentucky) This page titled 4.1: Lewis Electron Dot Structures is shared under a CK-12 license and was authored, remixed, and/or curated by CK-12 Foundation. Ionic substances are completely held together by ionic bonds. The full charges of the ions (for example, Na+ and Cl− in sodium ...Are you looking to add a touch of sophistication and elegance to your home? Look no further than John Lewis large table lamps. These beautifully crafted lamps not only provide func...To draw the Lewis structure of an atom, write the symbol of the atom and draw dots around it to represent the valence electrons. Note that hydrogen is often …Lewis Symbols. At the beginning of the 20 th century, the American chemist G. N. Lewis (1875–1946) devised a system of symbols—now called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds.Each Lewis dot symbol consists of the …Interpreting Lewis Structures. A Lewis structure contains symbols for the elements in a molecule, connected by lines and surrounded by pairs of dots. For example, here is the Lewis structure for water, H 2 O. Each symbol represents the nucleus and the core electrons of the atom. Here, each “H” represents the nucleus of a hydrogen atom, and ...May 23, 2023 · Here, I have explained 6 simple steps to draw the lewis dot structure of C2H2Br2 (along with images). So, if you are ready to go with these 6 simple steps, then let’s dive right into it! Lewis structure of C2H2Br2 (1, 2-dibromoethene) contains a double bond between the two Carbon (C) atoms and a single bonds between Carbon-Hydrogen atoms and ... Step #4: Complete the octet (or duplet) on outside atoms. If the valence electrons are left, then put the valence electrons pair on the central atom. Don’t worry, I’ll explain! In the Lewis structure of NHF2, the outer atoms are hydrogen atom as well as fluorine atom. Hydrogen already has a duplet (see below image).Each electron pair (:) in the lewis dot structure of BeI2 represents the single bond ( | ). So the above lewis dot structure of BeI2 can also be represented as shown below. Related lewis structures for your practice: Lewis Structure of CHBr3 Lewis Structure of SiCl2Br2 Lewis Structure of SbF5 Lewis Structure of ClBr3 Lewis …13 PRACTICE PROBLEM. A 3D structure for SiCl 2 Br 2 is shown below: Is the molecule polar? If so, which direction does the dipole point? ANSWERS OPTIONS. from the Si to …Each electron pair (:) in the lewis dot structure of BeI2 represents the single bond ( | ). So the above lewis dot structure of BeI2 can also be represented as shown below. Related lewis structures for your practice: Lewis Structure of CHBr3 Lewis Structure of SiCl2Br2 Lewis Structure of SbF5 Lewis Structure of ClBr3 Lewis …A Lewis electron dot diagram (or electron dot diagram, or a Lewis diagram, or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below …At the beginning of the 20th century, the American chemist G. N. Lewis (1875–1946) devised a system of symbols—now called Lewis electron dot symbols A system that can be used to predict the number of bonds formed by most elements in their compounds., often shortened to Lewis dot symbols—that can be used for predicting the number of bonds … Lewis dot symbols provide a simple rationalization of why elements form compounds with the observed stoichiometries. In the Lewis model, the number of bonds formed by an element in a neutral compound is the same as the number of unpaired electrons it must share with other atoms to complete its octet of electrons. Lewis Structure Examples. The Lewis electron dot structures of a few molecules are illustrated in this subsection. 1. Lewis Structure of CO2. The central atom of this molecule is carbon. Oxygen contains 6 valence electrons which form 2 lone pairs. Since it is bonded to only one carbon atom, it must form a double bond. Lewis Structure: Covalent chemical compounds are primarily composed of atoms from elements near the right side of the periodic table. These atoms share valence electron pairs in a molecular unit. If at least 3 constituent atoms are present, then there is at least one atom that serves as a central atom. It is bonded to multiple terminal atoms. The Lewis structure of SiCl 2 Br 2 contains four single bonds, with silicon in the center, and two chlorines and two bromines on either side. There are three lone …Draw the Lewis dot structure of Sr(CN)_2. Draw the Lewis structure of H_2Te. Draw a Lewis structure for the following. N_3^-Draw a Lewis structure for the following. O_3; Draw the Lewis dot structure for (CH_2NO_2)^-. Draw the Lewis structure for SiCl_2Br_2. Draw the Lewis structure for SiCl2Br2. Draw Lewis structure for: a. CO b. AsF6; Draw ...Lewis structure of a water molecule. Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule. A Lewis structure can be drawn for any …When it comes to finding the perfect recliner for your home, John Lewis is a great place to start. With a wide selection of styles and sizes, you’re sure to find something that fit...Chemistry questions and answers. Part D Br Based on your answers to Parts A, B, and C select the best Lewis structure (electron-dot structure) for HCH View Available Hint (s) C:Br:H: H H:Br:C: H H:C:Br H H C:H:Br Submit.If you’re in the market for new curtains, there’s no better time to find a great deal than during the John Lewis curtains sale. As one of the leading retailers in the UK, John Lewi...A step-by-step explanation of how to draw the N3- Lewis Dot Structure (Azide ion).For the N3- structure use the periodic table to find the total number of va...Draw the Lewis dot structure for H2CO and provide the following information. a. number of atoms bonded to the central atom b. number of lone electron pairs on the central atom c. hybridization of the central atom d. molecular shape e. polarity; Draw the Lewis dot structure for PF5 and provide the following information. a.Solution. Solutions to Example 10.4.1. Steps for Writing Lewis Structures. Example 10.5.1 10.5. 1. 1. Determine the total number of valence electrons in the molecule or ion. Each H atom (group 1) has 1 valence electron, and the O atom (group 16) has 6 valence electrons, for a total of 8 valence electrons.Lewis Symbols. We use Lewis symbols to describe valence electron configurations of atoms and monatomic ions. A Lewis symbol consists of an elemental symbol surrounded by one dot for each of its valence electrons: Figure 7.9 shows the Lewis symbols for the elements of the third period of the periodic table.Spread the love. Drag the cursor to the bottom carbon # 3 on the cyclohexane ring until the joint between the two bonds “lights up” and you see a blue box. Left click and you can now change your carbon to any atom that you would like. In this case it is nitrogen so I type an “N”. Table of Contents show.Study with Quizlet and memorize flashcards containing terms like Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table. N-N Sr-O Rb-N O-F S-Cl Br-Br P-Cl Mn-Cl, BOND POLARITY, Classify the bonds …Nov 4, 2023 · The Lewis structure for the molecule SiCl2Br2 is drawn by following a set of guidelines. Firstly, Silicon (Si) is the least electronegative and is chosen as the central atom and the others are arranged around it. Draw the electron-dot formula for SiCl2Br2. To add the element Si, either double click on any atom and type the element symbol, or access a periodic table of elements from the …Steps of drawing NHF2 lewis structure Step 1: Find the total valence electrons in NHF2 molecule. In order to find the total valence electrons in NHF2 molecule, first of all you should know the valence electrons present in nitrogen atom, hydrogen atom as well as fluorine atom. (Valence electrons are the electrons that are present in the …Apr 6, 2023 · The final Lewis structure for SiCl2Br2 will have Si as the central atom with a single bond to each Cl and Br atom. Si will also have one lone pair of electrons around it. There will be two lone pairs on each Cl atom and one lone pair on each Br atom. The resulting Lewis structure should look something like this: Cl | Br--Si--Cl | Br Draw Lewis structure of C_2 HO_4^-Draw the Lewis structure of CH_3OH^{2+}. Draw the Lewis structure for CH4. Draw the Lewis structure for CF_2H_2. Draw a Lewis structure for HCCCH_2OH. Draw the Lewis structure for P 4 . Draw the Lewis structure for SeO42-. Draw the Lewis structure for SeCl_4. Draw Lewis structure for CH_3NH_3^+.Draw Lewis dot structure for the following molecule. Draw Lewis dot structure for the following molecule. [N(CH(CH_3)_2)_2]^-Part B In the molecule PCl_3, phosphorus makes three covalent bonds. Therefore, three of its five valence electrons need to be unpaired. The orbitals with the same energy are known as degenerate orbiSet up skeleton with single bonds (central atom is the atom which can make the most bonds). 2. Fill the octets of the outside atoms with lone pairs of electrons. 3. Any remaining valence electrons go on central atom. 4. Once all electrons are used, form multiple bonds to the central atom if not “full.”.VIDEO ANSWER: The Louis model states that whenever we form, chemical bonds are always trying to make sure that all of the elements in the chemical compound have a total of eight electrons surrounding them. ... Using the octet rule …Question: A Lewis structure shows the arrangement of atoms and valence electrons in a molecule. Most often, each bonding pair of electrons is shown as a line whereas nonbonding electrons are shown as dots as seen here. (Figure 1) Notice that each atom is surrounded by a total of eight electrons, an octet. Draw the Lewis structure for SiCl2Br2.Draw the electron-dot formula for SiCl2Br2. This is what i have, but its incorrect. Show transcribed image text. Here’s the best way to solve it. Expert-verified. 100% (15 ratings) …Draw the Lewis dot structure for ClF_2^+. Draw Lewis dot structure for BrCl_2^-. Draw the Lewis dot structure of Sr(CN)_2. Draw the Lewis structure for SiCl_2Br_2. Draw the Lewis structure for SiCl2Br2. Draw the Lewis dot structure for N_4O. Draw the Lewis dot structure for CIO_2^{1-}. Draw the Lewis dot structure for PF3.Apr 25, 2008 · Chemistry. In summary, the conversation discusses three problems that need to be solved: finding the formal charge on atoms in HOFO, determining the Lewis structure of SiCl2Br2, and identifying the electron dot structure of CHClO. The solutions involve writing HOFO as a neutral species with lone pairs on fluorine, a tetrahedral geometry for ... We use Lewis symbols to describe valence electron configurations of atoms and monatomic ions. A Lewis symbol consists of an elemental symbol surrounded by one dot for each of its valence electrons: Figure 4.1.1 4.1. 1 shows the Lewis symbols for the elements of the third period of the periodic table. Electron dots are typically arranged in …Draw a lewis dot diagram and note the shape of the following molecules, include brackets around ions, and show the charge of the ion. a. H_2O b. NH_3 c. NH^+_4 d. CCl_4. Draw the lewis dot structure for fluoride, F^- and magnesium ion, Mg^ {2+}. Draw the Lewis dot structure for benzene, showing valence electrons.Write Lewis structures for: (a) PO4 3- (b) IC4 - Write the Lewis structure for Ne. Draw the Lewis structure for N2. Draw the Lewis structure for NH3. Draw the Lewis Structure of C 2 H 5 C 3 H 3 O . Draw Lewis structure of C_2 HO_4^-Draw the Lewis structure of NOF. Draw the Lewis structure for O_2. Draw the Lewis structure of CH_3OH^{2+}.Calculate the total number of valence electrons. Here, the given molecule is …Lewis structure, also known as Lewis dot structure or electron dot structure, is a simple and straightforward way of representing the outermost electron shell in a chemical species like an atom, ion, or molecule. It shows how electrons are positioned around the atoms either as lone pairs or in a chemical bond, typically a covalent bond or a ...Lewis dot structures are useful to predict the geometry of a molecule. Sometimes, one of the atoms in the molecule does not follow the octet rule for arranging electron pairs around an atom. This example uses the steps outlined in How to Draw A Lewis Structure to draw a Lewis structure of a molecule where one atom is an …Steps of drawing HOCN lewis structure Step 1: Find the total valence electrons in HOCN molecule. In order to find the total valence electrons in an HOCN molecule, first of all you should know the valence electrons present in hydrogen atom, oxygen atom, carbon atom as well as nitrogen atom. (Valence electrons are the …Figure 13.4.2 demonstrates the use of Lewis symbols to show the transfer of electrons during the formation of ionic compounds. Figure 13.4.2: Cations are formed when atoms lose electrons, represented by fewer Lewis dots, whereas anions are formed by atoms gaining electrons. The total number of electrons does not change.When it comes to decorating your home, lighting is one of the most important elements. A table lamp can be a great way to add a touch of style and personality to any room. At John ...Lewis Structure of N2H4. Lewis dot diagram or electron dot structure is the pictorial representation of the molecular formula of a compound along with its electrons that are represented as dots. ... Next Article SiCl2Br2 Lewis Structure, Geometry, Hybridization, and Polarity. Leave a Reply Cancel reply. Your email address will not be ...May 22, 2023 · Step #1: Calculate the total number of valence electrons. Here, the given molecule is SBr2 (sulfur dibromide). In order to draw the lewis structure of SBr2, first of all you have to find the total number of valence electrons present in the SBr2 molecule. (Valence electrons are the number of electrons present in the outermost shell of an atom). A step-by-step explanation of how to draw the CS2 Lewis Dot Structure (Carbon disulfide).For the CS2 structure use the periodic table to find the total numbe...Lewis dot structures are useful to predict the geometry of a molecule. Sometimes, one of the atoms in the molecule does not follow the octet rule for arranging electron pairs around an atom. This example uses the steps outlined in How to Draw A Lewis Structure to draw a Lewis structure of a molecule where one atom is an …Calculate the total number of valence electrons. Here, the given molecule is …Draw the Lewis structure for SiCl_2Br_2. Draw the Lewis structure for CF_2H_2. Draw the Lewis structure for i) IF6^+ ii) XeF2 iii) NO3^-. Draw a Lewis structure for SO3. Draw the Lewis structure for CH4. Draw the Lewis structure for N2. Draw the Lewis structure of S_8. Draw the Lewis structure for NH3. Draw the Lewis structure for O_2. Lewis Structure Finder. This widget gets the Lewis structure of chemical compounds. Get the free "Lewis Structure Finder" widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more Chemistry widgets in Wolfram|Alpha. A step-by-step explanation of how to draw the SiCl2Br2 Lewis Dot Structure For the SiCl2Br2 structure use the periodic table to find the total number of valence electrons for the SiCl2Br2...Jan 30, 2023 · Follow these simple steps to draw Lewis dot structures: Draw the atoms on paper and put dots around them to represent valence electrons of the atom. Be sure to have the correct number of electrons. If the species is an ion, add or subtract electrons corresponding to the charge of the ion. Add an electron for every negative (-) charge, and ... A Lewis diagram shows how the valence electrons are distributed around the atoms in a molecule. Shared pairs of electrons are drawn as lines between atoms, while lone pairs of electrons are drawn as dots next to atoms. When constructing a Lewis diagram, keep in mind the octet rule, which refers to the tendency of atoms to gain, lose, or share ...Draw the Lewis structure for SiCl2Br2. Draw a Lewis structure of a PCI3 molecule. Draw the Lewis dot structure of Sr(CN)_2. Draw the Lewis structure for SCN^-. Draw the Lewis structure of Cl3PO. Draw Lewis dot structure for BrCl_2^-. Draw the Lewis structure for the HCCCH_3 molecule. Draw Lewis structures of C2HO4- and C2O42-. Draw the Lewis ... Draw the Lewis dot structure for SO32-. Determine the electron geometry and molecular shape of this molecule. Draw a Lewis dot diagram for NF_2H and use the oxidation state method of electron bookkeeping to determine how many electrons each atom should be assigned. Draw the Lewis dot structure for H2O and provide the following information. a. May 22, 2023 · Step #1: Calculate the total number of valence electrons. Here, the given molecule is CH2Br2. In order to draw the lewis structure of CH2Br2, first of all you have to find the total number of valence electrons present in the CH2Br2 molecule. (Valence electrons are the number of electrons present in the outermost shell of an atom). Write Lewis structures for: (a) PO4 3- (b) IC4 - Write the Lewis structure for Ne. Draw the Lewis structure for N2. Draw the Lewis structure for NH3. Draw the Lewis Structure of C 2 H 5 C 3 H 3 O . Draw Lewis structure of C_2 HO_4^-Draw the Lewis structure of NOF. Draw the Lewis structure for O_2. Draw the Lewis structure of CH_3OH^{2+}.Lewis Structure Examples. The Lewis electron dot structures of a few molecules are illustrated in this subsection. 1. Lewis Structure of CO2. The central atom of this molecule is carbon. Oxygen contains 6 valence electrons which form 2 lone pairs. Since it is bonded to only one carbon atom, it must form a double bond. Drawing the Lewis Structure for SBr 2. Viewing Notes: SBr 2 isn't the most common chemical compound (it doesn't even have a Wikipedia article!). The Lewis structure for SBr 2 is fairly straighforward and only involves single bonds. For the SBr 2 Lewis structure there are a total of 20 valence electrons available. SBr 2 is similar to the SCl 2 ... The Lewis structure for SiCl2Br2 is shown below. Cl Cl \ / Si--Br / \ Cl Cl. View the full answer. Step 2. Unlock. Answer. Unlock. Previous question Next question. Are you on the hunt for the best deals and sales at John Lewis UK? Look no further. In this shopper’s guide, we’ll explore the top ways to save money and find great bargains at thi...
Spread the love. Drag the cursor to the bottom carbon # 3 on the cyclohexane ring until the joint between the two bonds “lights up” and you see a blue box. Left click and you can now change your carbon to any atom that you would like. In this case it is nitrogen so I type an “N”. Table of Contents show.. Sneesnaw of leak
Lewis Symbols. At the beginning of the 20 th century, the American chemist G. N. Lewis (1875–1946) devised a system of symbols—now called Lewis electron dot symbols (often shortened to Lewis dot symbols) that can be used for predicting the number of bonds formed by most elements in their compounds.Each Lewis dot symbol consists of the …If you’re in the market for new curtains, there’s no better time to find a great deal than during the John Lewis curtains sale. As one of the leading retailers in the UK, John Lewi...A step-by-step explanation of how to draw the ClF Lewis Dot Structure (Chlorine Monofluoride)For the ClF Lewis structure, calculate the total number of valen...If you’re in the market for new curtains, there’s no better time to shop than during a John Lewis curtains sale. Known for their high-quality and stylish home decor, John Lewis off...The Lewis structure for SiCl2Br2 can be drawn as: Cl Br | | Cl -- Si -- C -- Br | | Cl Br. The Lewis structure for SiCl2Br2 (silicon tetrachloride dibromide) can be represented as follows: Silicon (Si) is the central atom in this molecule. It has four valence electrons. Chlorine (Cl) and bromine (Br) are the surrounding atoms, each having seven ...When it comes to furniture, comfort is key. Whether you’re looking for a place to relax after a long day or a comfortable spot to watch your favorite movie, a recliner from John Le...How to draw lewis structure of SiCl 2 Br 2? Lewis structure also known as electron dot structure was first introduced by scientist Gilbert. N. Lewis in the year of 1916. It is one type of special structural …Calculate the total number of valence electrons. Here, the given molecule is …Electron-Dot Formulas (Worksheet) This tutorial is designed to demonstrate the step-by-step process of drawing electron dot formulas. In the typical lecture, you end up with the final formula but you may not remember all of the individual steps that were done in drawing the formula. These tutorials allow you to repeat any step of the process ...4 days ago · Hence, we can draw the Lewis structure of the Silicon atom as follows: I have written multiple articles on the lewis structure of silicon compounds. Below are a few of them. SiCl2Br2 Lewis Structure, Geometry, Hybridization, and Polarity. SiH4 Lewis Structure, Geometry, Hybridization, and Polarity To draw the Lewis dot structure of C2H5F, we need to determine the total number of valence electrons in the molecule. Carbon (C) has 4 valence electrons. Hydrogen (H) has 1 valence electron. Fluorine (F) has 7 valence electrons. For C2H5F, we have: 2 carbon atoms (C) = 2 x 4 = 8 valence electrons.To use the Lewis Structure Calculator follow these steps: Enter the formula of the molecule in the field provided for it. For example, if we want to obtain the Lewis structure of the Sulfate ion, SO 4 – 2, we must first enter the charge by typing (-2) or by entering -2 in the charge field and pressing the «Add» button. Then we write the rest of the formula being …Are you looking to add a touch of sophistication and elegance to your home? Look no further than John Lewis large table lamps. These beautifully crafted lamps not only provide func...Spread the love. This strategy is called D2O exchange or, more colloquially, the “D2O shake.”. This exchange eliminates the OLH resonance (thus identifying it) and also eliminates any splitting between the a-protons and the OLH proton. The only splitting re- maining is then the splitting with any b-protons. Table of Contents show..