Atoms And Nuclei Question 121

Question: In hydrogen atom, when electron jumps from second to first orbit, then energy emitted is [AIEEE 2002]

Options:

A) ? 13.6 eV

B) ? 27.2 eV

C) ? 6.8 eV

D) None of these

Show Answer

Answer:

Correct Answer: D

Solution:

$ {E_{n_{1}\to n_{2}}}=-13.6[ \frac{1}{n_{2}^{2}}-\frac{1}{n_{1}^{2}} ];n_{1}=2\And n_{2}=1 $
$ \Rightarrow E_{II}\to E_{I}=-13.6\times \frac{3}{4}=-10.2\ eV $



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