A) \[-13.6eV\]
B) \[-3.4eV\]
C) \[-1.51eV\]
D) \[-0.85eV\]
Correct Answer: D
Solution :
For hydrogen atom \[{{E}_{n}}=\frac{-136}{{{n}^{2}}}eV\] \[{{E}_{n}}=\frac{-136}{{{4}^{2}}}eV\] \[=-0.85eV\]
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