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AIEEE 2011 Solved Paper
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© examsnet.com
Question : 58
Total: 91
Energy required for the electron excitation in
Li
+
+
from the first to the third Bohr orbit is:
36.3
eV
108.8
eV
122.4
eV
12.1
eV
Validate
Solution:
Energy of excitation,
∆
E
=
13.6
Z
2
(
1
n
1
2
−
1
n
2
2
)
eV
⇒
∆
E
=
13.6
(
3
)
2
(
1
1
2
−
1
3
2
)
=
108.8
eV
© examsnet.com
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