Physical Chemistry Third Edition

1338 K Answers to Numerical Exercises and Odd-Numbered Numerical Problems

Chapter 20 Problems

20.1
̂C 2 z

20.3
ψ 2 py(r,θ,φ)

20.11
a. 2 px
b. 2 py

20.15
a.^1 Σ
b.^1 Σand^3 Σ

20.17

(^3) Σ+
uand
(^3) Πu
20.19
bond order unpaired electrons
a. 3/2 1
b. 5/2 1
c. 5/2 1
20.33
41.3% ionic
cI 0. 643
cC 0. 766
20.35
a. |XC−XN| 0 .63 (Table value 0 .5)
b. |XC−XF| 1 .58 (Table value 1 .5)
20.37
a. |XH−XN| 1 .35 (Table value 0 .9)
b. |XH−XF| 1 .68 (Table value 1 .9)
20.41
a. FALSE
b. FALSE
c.TRUE
d. TRUE
e.FALSE
f. FALSE
g. FALSE
h. TRUE
i.FALSE
Chapter 21 Exercises
21.1
E 1
i − 1
σh − 1
C∞z 1
σv 1
C 2 − 1
21.13
60% of a bond length
21.14
̂E ̂C 2 ̂σx ̂σy
O1s 1 111
O2s 1 111
O2px 1 − 11 − 1
O2py 1 − 1 − 11
O2pz 1 111
a 1 1 111
b 2 1 − 1 − 11
21.16
x′ 1
y′ 0. 23205
z′− 3. 59308
21.17
a. E,C 3 ,C 32 , and 3σv
b. E,C 3 ,C^23 ,3σv,3C 2 ,σh,S 3
21.19
a. XeOF 4
b. PH 3 ,SO^23 −, XeO 3
c. BH 3
21.20
a. C2v
b. C2h
c. C2v
Chapter 21 Problems
21.31
Wα+ 2 β,α−β, andα−β
21.33
For benzene,β− 5. 5 × 10 −^19 J− 3 .4eV
For 1,3-butadiene,β− 7. 4 × 10 −^19 J− 4 .6eV