A) -2.72 eV
B) -0.85 eV
C) -0.54 eV
D) -3.4 eV
Correct Answer: D
Solution :
Given: Energy of hydrogen atom in ground state = 13.6 eV and quantum number (n) = 2. We know that energy of hydrogen atom \[({{E}_{n}})=-\frac{13.6}{{{n}^{2}}}-\frac{13.6}{{{(2)}^{2}}}=-\,3.4\,eV.\]
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