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N(0)//2 atoms of X((g)) are converted in...

`N_(0)//2` atoms of `X_((g))` are converted into `X_((g))^(o+)` by energy `E_(1), N_(0)//2` atoms of `X_((g))` are converted inot `X_((g))^(ɵ)` by energy `E_(2)`. Hence ionisation potential and electron affinity of `X_((g))` per atom are

A

`( 2E_(1))/( N_(0)), ( 2(E_(1)-E_(2)))/(N_(0))`

B

`(2E_(1))/(N_(0)),(2E_(2))/(N_(0))`

C

`((E_(1)-E_(2)))/(N_(0)),(2E_(2))/(N_(0))`

D

None is correct

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