Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is .

(A) -sulphur

(B) -sulphur

(C) -form

Question

Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is .

(A) -sulphur

(B) -sulphur

(C) -form

Canvas Classes · Accepted Answer

Paramagnetism requires unpaired electrons.

- -sulphur (): Cyclic  ring — all electrons paired → diamagnetic ✗
- -sulphur (): Also cyclic  — all electrons paired → diamagnetic ✗
- -form: Analogous to , has two unpaired electrons in degenerate  orbitals → paramagnetic ✓

Only  is paramagnetic.

Answer: 1

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