Atoms And Nuclei Question 138
Question: The energy of the highest energy photon of Balmer series of hydrogen spectrum is close to [UPSEAT 2004]
Options:
A) 13.6 eV
B) 3.4 eV
C) 1.5 eV
D) 0.85 eV
Show Answer
Answer:
Correct Answer: B
Solution:
$ E=13.6[ \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} ]. $ For highest energy in Balmer series $ n_{1}=2 $ and $ n_{2}=\infty $ Þ $ E=13.6[ \frac{1}{{{(2)}^{2}}}-\frac{1}{{{(\infty )}^{2}}} ]=3.4,eV $
