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The ionisation potential of hydrogen ato...

The ionisation potential of hydrogen atom is `13.6` volt. The energy required to remove an electron in the `n = 2` state of the hydrogen atom is

A

3.4 eV

B

6.8 eV

C

27.2 eV

D

54.4 eV

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The correct Answer is:
A
`Delta E=13.6 Z^(2) ((1)/(2^(2))-(1)/(oo))=(13.6xx1)/(4)=3.4 eV`
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