The correct order of electron affinity for the different families is:

H a l o g e n > c a r b o n > n i t r o g e n > o x y g e n

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H a l o g e n > o x y g e n > n i t r o g e n > c a r b o n

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H a l o g e n > n i t r o g e n > c a r b o n > o x y g e n

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H a l o g e n > o x y g e n > c a r b o n > n i t r o g e n

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Solution

The correct option is D $H a l o g e n > o x y g e n > c a r b o n > n i t r o g e n$
The correct order of electron affinity for the different families is $H a l o g e n > o x y g e n > c a r b o n > n i t r o g e n$
On moving from left to right in a period, the electron affinity increases (becomes more negative). This is due to decrease in size and increase in nuclear charge.
The electron affinity of nitrogen is lower than the electron affinity of carbon due to the extra stability of half-filled p orbitals in nitrogen.

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