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 $
