Chapter 42
527
P42.26
The 5th excited state has
n
=
6 , energy
−
=−
13 6
0378
.
.
eV
36
eV .
The atom loses this much energy:
hc
λ
=
×⋅×
××
=
−
−−
6626 10
300 10
1090 10
160 10
114
34
8
91
9
..
.
.
Js
ms
m
J
e
V
eV
ej
e
j
e
j
to end up with energy
=
−
152
...
eV
eV
eV
which is the energy in state 3:
−=
−
13 6
151
.
.
eV
3
eV
3
.
While
n
=
3 ,
A
can be as large as 2, giving angular momentum
AA
=
=
+=
16
af
.
P42.27
(a)
n
=
1:
For
n
=
1,
A
=
0,
m
A
=
m
s
=±
1
2
n
A
m
A
m
s
1
0
0
–1/2
1
0
0
+1/2
Yields 2 sets;
22
1
2
2
2
n
==
(b)
n
=
2 :
For
n
=
2 ,
we have
n
A
m
A
m
s
200
±
1/2
21
–
1
±
1/2
210
±
1/2
211
±
1/2
yields 8 sets;
2
8
2
2
n
Note that the number is twice the number of
m
A
values. Also, for each
A
there are
2
1
A
+
different
m
A
values. Finally,
A
can take on values ranging from 0 to
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .
 Fall '11
 Staff
 Physics, Energy

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