Interpretation: The formulas and space filling models of the given molecules are to be examined. The correctness of each structure is to be checked. The correct structure is to be sketched for incorrect structures.
Concept Introduction: A Lewis structure is used to represent the valence electrons and the bonds present in a molecule.
Dots in the Lewis structure represent the valence electrons.
Total number of electrons for Lewis structure can be calculated by summing the valence electrons of each atom in the molecule.
Once a Lewis structure is drawn, it is possible to identify the shape of the molecule using the VSEPR theory.
VSEPR stand for Valence Shell Electron Pair repulsion theory. It uses chemical formula, number of bonds and lone pairs to predict the shape of molecules.
The geometry of a molecule or a polyatomic ion is determined on the basis of the total number of electron groups, the number of bonding groups and the number of lone pairs. To determine the geometry of the molecule, follow the following table:
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Introductory Chemistry (5th Edition) (Standalone Book)
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- How many nonbonding pairs (or lone-pairs) of electrons are found on the central atom in the Lewis structure of XeF2 molecule? (A) 0 (B) 1 (C) 2 (D) 3arrow_forwardChlorine dioxide gas (ClO2) is used as a commercial bleachingagent. It bleaches materials by oxidizing them. In thecourse of these reactions, the ClO2 is itself reduced. (a)What is the Lewis structure for ClO2? (b) Why do you thinkthat ClO2 is reduced so readily? (c) When a ClO2 moleculegains an electron, the chlorite ion, ClO2-, forms. Draw theLewis structure for ClO2-. (d) Predict the O—Cl—O bondangle in the ClO2- ion. (e) One method of preparing ClO2is by the reaction of chlorine and sodium chlorite:Cl2(g) + 2 NaClO2(s)------>2 ClO2(g) + 2 NaCl(s)If you allow 15.0 g of NaClO2 to react with 2.00 L of chlorinegas at a pressure of 1.50 atm at 21 °C, how many gramsof ClO2 can be prepared?arrow_forward(a) (i) (ii) (iii) With the aid of a simple schematic, explain what covalent bonding is and how it is formed. What are the differences between a covalent bond and an ionic bond? Which type of bond is found in crystalline silicon? At room temperature do you expect an ionic crystal to be a good electrical conductor or a good electrical insulator? Explain why.arrow_forward
- What is the molecular structure of the stable form of FNO2? (N is the central atom.)arrow_forward31. What is the molecular geometry of carbon dioxide, CO2? (A) Bent (B) Tetrahedral (C) Trigonal pyramidal (D) Lineararrow_forwardA nonmetal like oxygen forms both ionic and covalent bonds, depending on the identity of the element to which it bonds. What type of bonding is observed in CaO and CO 2? Explain why two different types of bonding are observed.arrow_forward
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