2. each atom if it has. Show all steps (NHSB). Draw the Lewis structures for the following molecules. Indicate the formal charge on (a) N,²- (b) SO3 olda ad ni d Two molecules may both be correctly described as "bent" even though one has a bond angle of 118° and the other has a bond angle of 105°. How is this possible?

eaching and lear X G The element in period 5 that has X ment/takeCovalentActivity.do?locator=assignment-take [Review Topics] [References] We can draw three inequivalent Lewis structures for the sulfite ion, SO32. The concepts of formal charge and electronegativity can help us choose the structure that is the best representation. Formal Charge 1. Assign formal charges to the elements in each of the structures below. Note: Count oxygen atoms starting from the left for each structure. 40 S 01 02 03 Submit Answer :O: 4- --0000 :0: 4+ C Solved The following Lewis diagr x 2. The best Lewis structure for SO3²- is V. fg Yo 144 :0: Retry Entire Group 9 more group attempts remaining fo B 0% " A a 112 :0: C :0: + O ins prt sc Previous A ENG delete home 11:54 A 11/28/20 end

a) For the three Lewis structures shown below, determine the formal charge of each of the three atoms (S, C, and N). Structure 1 Structure 2 Structure 3 : Atom S O N Structure 1 -N: 2 6 4 : S- Structure 2 0 0 0 Structure 3 6 2 EN: 4

Draw the Lewis Structure of CIO3 (OR CI O 3 1 minus) with the lowest possible formal charge on Cl by expanding its octet.. How many lone pairs (non-bonding pairs) are present?

+ || A Lewis structure with placeholder elements is shown below. If the formal charge of the central atom is +1, choose the possible identity or identities of the central atom. A) Cl, Br, or I B) Xe C) S or Se D) N, P, or As E) O, S, or Se

iii. Vinyl chloride is the starting material for the production of poly(vinyl chloride), abbreviated PVC. Its recycling code is "V". The major use of PVC is for tubing in residential and commercial construction. H Cl H H Vinyl chloride (a) Complete the Lewis structure for vinyl chloride by showing all unshared pairs of electrons. (b) Predict the H-C-H, H-C-C and Cl-C-H, bond angles in this molecule. (c) Does vinyl chloride have polar bonds? (d) Is it a polar molecule? (e) Does it have a dipole? iv. Diazene (N,H,) and hydrazine (NH,NH,) are reactive nitrogen compounds. Use the hybrid orbitals theory to compare the bonding in these two molecules, and describe the differences in their molecular structures. v. Which molecules in the following figure show an increase in bond order when one electron is added to the molecule? (Hint: Use the molecular orbitals theory.) Liz Bez B3 C2 N2 O2 Nez vi. Use the molecular orbitals theory to decide whether NF would be stabilized or destabilized by…

1. What is the formal charge on each atom in CH3Cl and the Lewis structure for it? 2.  What is the formal charge on each atom in PH4 nd the Lewis structure for it? 3. What is the formal charge on each atom in HNO3 and the Lewis structure for it?

4. The following are valid Lewis structures for CH3SOCH3. Label the formal charges and circle the best Lewis structure. H :ö: H H :0 H a) H-C=S-C-H b) Н—С—S— С-н H. H. H. H. Н :0: Н H :ö: H d) H-C=$-C-H c) Н—С—$—С-н H. H. H H

Which of the following is/are correct resonance structure(s) for compound A?

Sulfites are often found in wine as a preservative. Based on the best Lewis structure of sulfite, what is the AXE notation AND the formal charge on Sulfur? 0 AXЗЕ; 0 0 AX3; 0 0 АХЗЕ; -2 0 AX3; -1 0 АХЗЕ; -1