JEE Main 2025 Apr 4 Shift 1, Chemistry Q3: Molecular Orbital Theory

JEE Main2025Apr 4, Shift 1Chemistry

Which of the following molecules(s) show/s paramagnetic behavior ?

(A) $O_{2}$ (B) $N_{2}$ (C) $F_{2}$ (D) $S_{2}$ (E) $C l_{2}$

Choose the correct answer from the options given below :

Solution

A species is paramagnetic when its MO configuration contains one or more unpaired electrons.

Counting unpaired electrons from molecular orbital theory:

Only $O_{2}$ and $S_{2}$ are paramagnetic, so the correct option is A & D.

Concept behind this question

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