Atoms And Nuclei Question 304
Question: Energy required for the electron excitation in $ L{{i}^{+}} $ from the first to the third Bohr orbit is:
Options:
A) 36.3 eV
B) 108.8 eV
C) 122.4eV
D) 12.1 eV
Show Answer
Answer:
Correct Answer: B
Solution:
- Energy of excitation, $ \Delta E=13.6{{\pi }^{2}}( \frac{1}{{\eta_{1}}}-\frac{1}{{\eta_{2}}} )eV $
$ \Rightarrow \Delta E=13.6{{( 3 )}^{2}}( \frac{1}{1^{2}}-\frac{1}{3^{2}} )=108.9eV $
