A) 27.2 eV
B) 13.6eV
C) 6.8eV
D) 3.4eV
Correct Answer: D
Solution :
| [d] Energy required to remove electron in the n = 2 state \[=+\frac{13.6}{{{(2)}^{2}}}=\,+3.4\,ev\] |
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