A) 3.4eV
B) 4.53eV
C) 10.2eV
D) 13.6eV
Correct Answer: C
Solution :
Energy required to removed electron in the \[(n=2)\] stage The energy of the photon \[=R\left( \frac{1}{{{1}^{2}}}-\frac{1}{{{n}^{2}}} \right)\Rightarrow 13.6\,eV\left( \frac{1}{1}-\frac{1}{4} \right)\] \[=13.6\,eV\left( \frac{4-1}{4} \right)=13.6\,eV\times \frac{3}{4}=\frac{40.8}{4}eV\] \[=10.2\,eV\]You need to login to perform this action.
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