A) \[1.51\text{ }eV\]
B) \[3.4\,eV\]
C) \[6.04\,eV\]
D) \[13.6\text{ }eV\]
Correct Answer: A
Solution :
[a] 2nd excited state will be the 3rd energy level. \[{{E}_{n}}=\frac{13.6}{{{n}^{2}}}eV\,or\,E=\frac{13.6}{9}eV=1.51\,eV.\]
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