Chapter 2 Homework ANSWERS

2.18) Sn d = 2.8 * 10 -8 cm r = ½ * d = 1.4 * 10 -8 cm

a)

b)

c)

2.26

Symbol 65Zn Ru Sr Ag U

Protons 30 44 38 47 92

Neutrons 35 57 49 61 143

Electrons 30 44 38 47 92

Atomic Weight

65 101 87 108 235

2.44

Molecule Molecular Formula Empirical Formula

Benzene C6H6 CH

Silicone tetra Chloride SiCl4 SiCl4

diBorane B2H6 BH3

Glucose C6H12O6 CH2O

2.60)

PF5 Molecular FeCl3 Ionic

NaI Ionic LaP Molecular

SCl2 Molecular CaCO Molecular

Ca(NO3)2 Ionic N2O2 Molecular

2.90)