1.

The electron affinity of (A) Carbon is greater than oxygen (B) Oxygen is greater than fluorine (C) lodine is greater than bromine (D) Bromine is less than chlorine.

Answer»

Correct option  (D) Bromine is less than chlorine.

Explanation: 

Electron affinity increases across a period from left to right due to decrease in atomic size. Thus,electron affinity of C is less than O and electron affinity of O is less than that of F. 

Electron affinity decreases down a group due to increase in atomic size. Thus, electron affinity of I is less than Br and that of Br is less than Cl.



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