Which will have the maximum value of electron affinity Ox,Oy,Oz[x,y and z respectively are 0,−1 and −2]?

A
$O^{x}$
B
$O^{y}$
C
$O^{z}$
D
All have equal

Solution:

Being a neutral atom, oxygen will have higher electron affinity as there is electrostatic repulsion between additional electron and negative ion in case of $O^{-}$ and $O^{2 -}$ .

So option A is correct.

Which will have the maximum value of electron affinity $O^{x}, O^{y}, O^{z} [x, y$ and $z$ respectively are $0, - 1$ and $- 2]$ ?

Solution:

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