Subject - Chemistry:

Basics

MCQ - 273-2459

Question:

The electron affinities of N, O, S and Cl are

O ≈ Cl < N ≈ S
O < S < Cl < N
N < O < S < Cl
O < S < Cl < N

Correct Answer: C

Explanation:

Chorine being a group 17 element has maximum electronegativity. Nitrogen has zero electron affinity as its extra stability is associated with its half-filled orbitals. Sulphur has more electron affinity than oxygen because the effect of small size of oxygen atom is more dominated by the repulsion of electrons already present in 2p orbitals of 0 atom.

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