Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is _______
$(A) α - s u l p h u r$
$(B) β - s u l p h u r$
$(C) S_{2} - f o r m$

 JEE MAINS 2021

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Solution

$α$ -sulphur (Rhombic sulphur) and $β$ -sulphur (Monoclinic sulphur) are the two allotropes of sulphur which are diamagnetic. But the $S_{2}$ -form which exists at high temperature and has structure similar to $O_{2}$ is paramagnetic.
So, 1 is the correct answer

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(A) α - s u l p h u r

(B) β - s u l p h u r

(C) S_{2} - f o r m

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

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