Atoms And Nuclei Question 19

Question: The ratio of the energies of the hydrogen atom in its first to second excited state is [CPMT 1978]

Options:

A) 1/ 4

B) 4/9

C) 9/ 4

D) 4

Show Answer

Answer:

Correct Answer: C

Solution:

First excited state i.e. second orbit (n = 2) Second excited state i.e. third orbit (n = 3) $ \because \ E=-\frac{13.6}{n^{2}} $
Þ $ \frac{E_{2}}{E_{3}}={{( \frac{3}{2} )}^{2}}=\frac{9}{4} $



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