Chemical Bonding Worksheet With Answers Page 4
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12(c) From Equation 2.11 for E
N
A = 1.436
-6
B = 5.86 × 10
n = 9
Thus,
1/(1 - n)
⎛
⎞
A
=
r
⎜
⎟
0
⎝
⎠
nB
1/(1 - 9)
⎡
⎤
1.436
=
= 0.279 nm
⎢
⎥
(
)
-6
(8)
5.86 × 10
⎣
⎦
and
A
B
= −
+
E
0
1/(1 - n)
n/(1 - n)
⎛
⎞
⎛
⎞
A
A
⎜
⎟
⎜
⎟
⎝
⎠
⎝
⎠
nB
nB
−6
1.436
5.86 × 10
= −
+
1/(1 − 9)
9 /(1 − 9)
⎡
⎤
⎡
⎤
1.436
1.436
⎢
⎥
⎢
⎥
(
)
(
)
−6
−6
⎢
(9)
5.86
10
⎥
⎢
(9)
5.86 × 10
⎥
×
⎣
⎦
⎣
⎦
= – 4.57 eV
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