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Ionisation energy of He^(+) " is " 19.6 ...

Ionisation energy of `He^(+) " is " 19.6 xx 10^(-18)J "atom"^(-1)`. The energy of the first stationary state `(n = 1)` of `Li^(2+)` is

A

`4.41xx10^(-16)J"atom"^(-1)`

B

`-4.41xx10^(-17)J"atom"^(-1)`

C

`-2.2xx10^(-15)J"atom"^(-1)`

D

`8.82xx10^(-17)J"atom"^(-1)`

Text Solution

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The correct Answer is:
B
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