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Multiple choice
In hydrogen,
E
n
=
−
13.6
E_n = -13.6
E
n
=
−
13.6
eV
/
n
2
/ n^2
/
n
2
. The ionization energy from the
n
=
2
n=2
n
=
2
level is
I
=
−
E
2
=
+
3.4
I = -E_2 = +3.4
I
=
−
E
2
=
+
3.4
eV, and the
n
=
2
n=2
n
=
2
level's total degeneracy including spin is
g
=
2
n
2
=
8
g = 2n^2 = 8
g
=
2
n
2
=
8
. What is the product
I
⋅
g
I \cdot g
I
⋅
g
(in eV)?
6.8
(
=
I
⋅
2
)
6.8 (= I \cdot 2)
6.8
(
=
I
⋅
2
)
108.8
(
=
13.6
⋅
8
)
108.8 (= 13.6 \cdot 8)
108.8
(
=
13.6
⋅
8
)
27.2
13.6
(
=
I
⋅
2
n
2
13.6 (= I \cdot 2n^2
13.6
(
=
I
⋅
2
n
2
with
n
=
1
)
n=1)
n
=
1
)
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