A electron of hydrogen atom on an excited state is having energy $\mathrm{E}_{\mathrm{n}}=-0.85 \mathrm{~eV}$. The maximum number of allowed transitions to lower energy level is _________.
Answer (integer)
6
Solution
<p>$$\begin{aligned}
& E_n=-\frac{13.6}{n^2}=-0.85 \\
& \Rightarrow n=4
\end{aligned}$$</p>
<p>No of transition</p>
<p>$=\frac{n(n-1)}{2}=\frac{4(4-1)}{2}=6$</p>
About this question
Subject: Physics · Chapter: Atoms and Nuclei · Topic: Bohr's Model of Hydrogen Atom
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