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If He^(+) ion is in its first excited st...

If `He^(+)` ion is in its first excited state then its ionization energy is

A

6.04 eV

B

48.36 eV

C

54.40 eV

D

13.60 eV

Text Solution

Verified by Experts

The correct Answer is:
D
`E_(n) = - 13.6 (z^(2))/(n^(2)), n = 2, z = 2`
`E = - 13.6 xx (2^(2))/(2^(2)) = - 13.6 eV`
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