1.

The energy of a hydrogen atom in its ground state is \[-13.6\ eV\]. The energy of the level corresponding to the quantum number n = 2 (first excited state) in the hydrogen atom is                  [CBSE PMT 1996; CBSE PMT 1997, 2001; MP PET 2000; AFMC 2000, 01, 02; BCECE 2003]

A. ? 2.72 eV
B. ? 0.85 eV
C. ? 0.54 eV
D. ? 3.4 eV
Answer» E.


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