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  • In helium ion, transition of electrons to ,shell from <img alt="\mathrm{n_{2}}" src="

In helium ion, transition of electrons to \mathrm{n_{1}},shell from \mathrm{n_{2}} shell takes place \mathrm{m} way such that
 \mathrm{2 n_2+3 n_1=9}
\mathrm{2 n_2-3 n_1=3}
In the given transition, find the number of photons emitted.

Option: 1

3


Option: 2

10


Option: 3

15


Option: 4

20


Answers (1)

best_answer

\mathrm{\begin{array}{r} 2 n_2+3 n_1=9 \\ 2 n_2-3 n_1=3 \\ \hline 4 n_2=12 \\ n_2=3 \\ \therefore n_1=1 \end{array}}

\mathrm{\text{Number of photons }=\frac{2(3)}{2}=3}.

Posted by

shivangi.bhatnagar

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