CHM 115 E & G Ch. 7
19. The yellow light whose frequency is doubled would be in the ultraviolet region. The beam
whose wavelength is doubled would be in the infrared region.
22. The absorbed photon must be in the ultraviolet region, while the emitted photon is in the red
portion of the visible region. The ground state atom absorbs a photon raising it to a high lying
excited state. The atom then loses energy in the form of the red photon falling to a lower lying
excited state. If the ground state atom absorbed a red photon, it would be impossible for it to
emit an ultraviolet photon.
27.
c
2
.
998
x
10
8
m
s
1
1
.
365
x
10
6
s
1
219
.
6
m
31.
56
x
10
6
km
x
10
3
m
1
km
2
.
998
x
10
8
m
s
1
1
.
9
x
10
2
s
35.
E
h
6
.
626
x
10
34
J
s
x
1
.
365
x
10
6
s
1
9
.
044
x
10
28
J
39.
c
2
.
998
x
10
8
m
s
1
3
.
84
x
10
14
s
1
7
.
81
x
10
7
m
781
nm
This is just at the extreme red end of the visible spectrum.
43.
E
ph
R
H
(
1
n
2
u
1
n
2
l
)
2
.
179
x
10
18
J
(
1
2
2
1
1
2
)
1
.
634
x
10
18
J
hc
E
ph
(
6
.
626
x
10
34
J
s
)
(
2
.
998
x
10
8
m
s
1
)
1
.
634
x
10
18
J
1
.
216
x
10
7
m
121
.
6
nm
This wavelength is in the UV portion of the EM spectrum.
49.
h
mv
6
.
626
x
10
34
J
s
(
1
.
6749286
x
10
27
kg
)
(
4
.
15
x
10
3
m
s
1
)
9
.
53
x
10
11
m
95
.
3
pm
remember
1
J
1
kg
m
2
s
2
53.
h
mv
6
.
626
x
10
34
J
s
(
0
.
145
kg
)
(
30
.
0
m
s
1
)
1
.
52
x
10
34
m
(This is much, much smaller than the diameter of an atom)
55. When n = 4, l may have the values 0, 1, 2 or 3 (l = 0, 1, 2,...(n -1) ).
If l is 3, ml may be -3, -2, -1, 0, 1, 2 or 3 (ml = -l to +l).
57. The M shell is the n = 3 shell, so there are 3 subshells, s (l = 0), p (l = 1) and d (l = 2). An f
subshell has l =3, so there are 2l +1 = 7 orbitals in an f subshell (ml = -3, -2, -1, 0, 1, 2, 3)
