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Byju's Answer
Standard XII
Physics
Carrier Concentration
If the value ...
Question
If the value of
E
n
=
−
78.4
kcal / mole, the order of the orbit in hydrogen atom is:
A
4
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B
3
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C
2
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D
1
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Solution
The correct option is
C
2
E
=
−
13.6
n
2
e
V
E
n
=
−
78.4
k
c
a
l
m
o
l
e
1
e
V
=
23.1
k
c
a
l
m
o
l
e
−
1
n
2
=
13.6
×
23.1
78.4
∴
n
=
2
Hence, option
C
is correct.
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1
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