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QAIPMT-2010-Ph-2056: NEET 2010 Physics - Class 12 AIPMT-2010-Ph-2056 Solution: The energy of a hydrogen atom in the ground state is -13.6 eV.…

The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a

He^+

ion in the first excited state will be

Multiple Choice Options

A $-13.6$ eV
B $-27.2$ eV
C $-54.4$ eV
D $-6.8$ eV

Step-by-Step Verified Solution

Energy of a H-like atom in it's n th state is given by, E n = _ 13.6 n 2 Z 2 For, first excited state of He + , n = 2, Z = 2 _ E He + = _ 13.6 2 2 _ 2 2 = -13.6 eV

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