CHEM 232 PS1 F2020 Exam with Accurate Solutions

CHEM 232 PS1 F2020 Exam with Accurate Solutions


CHEM 232 A Review of General Chemistry Problem Set Chapter 1
1. Rank the items in each set below according to the trends observed for the physical and chemical properties
indicated.

A. Rank the atoms in bold in order of increasing value of their formal charge (1 = most negatively charged; 4
= most positively charged). All lone electron pairs are shown for all atoms.

H H Cl
O H H
B P C
H H Cl Cl




B.



Cl H3C
O
B N N N
Cl Cl H3C C CH3




C.




D. The skeletons (atoms and single bonds only) have been drawn for four molecules below. Rank them in
order of increasing number of remaining electrons that must be added to each as bonded or lone electron
pairs to complete the Lewis structure (1 = least remaining electrons; 4 = most remaining electrons). Assume
each molecule is neutral unless otherwise indicated.




1

, 2