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Q.

Incorrect statement is

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a

Fluorine has the highest electron affinity

b

Greater the nuclear charge, greater is the electron affinity

c

The electron affinity of Nitrogen is positive (energy is absorbed)

d

Chlorine has highest electron affinity

answer is A.

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Detailed Solution

 Chlorine has the highest electron affinity. The outermost orbital of chlorine is 3p where there is enough space. Due to this, the electrons in this orbital share this space with extra electron. Fluoride anion is unstable as it has a high charge/mass ratio. 

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