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} $
