The ionisation energy of He^(o+) is 19....

The ionisation energy of `He^(o+)` is `19.6 xx 10^(-18)` J per atom .The energy of the first stationary state of `Li^(2+)` will be

A

`4.41xx10^(-16)J`

B

`4.41xx10^(-17)J`

C

`2.2xx10^(-15)J`

D

`8.82xx10^(-17)J`

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The correct Answer is:

B

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