JEE Mains · Physics · STD 12 - 12. atoms
A electron of hydrogen atom on an excited state is having energy \(E_n=-0.85 \mathrm{eV}\). The maximum number of allowed transitions to lower energy level is _______.
- A \(5\)
- B \(7\)
- C \(6\)
- D \(12\)
Answer & Solution
Correct Answer
(C) \(6\)
Step-by-step Solution
Detailed explanation
\( E_n=-\frac{13.6}{n^2}=-0.85 \) \( \Rightarrow n=4\) No of transition \(=\frac{n(n-1)}{2}=\frac{4(4-1)}{2}=6\)
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