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The number of unpaired electrons in a pa...

The number of unpaired electrons in a parmamagnetic diatomic molecule of an element with atomic number ` 16` is :

A

`4`

B

`1`

C

`2`

D

`3`

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The correct Answer is:
A
Element with atomic number 16 is sulphur and the paramagnetic diatomic molecule is `S_2`. Like `O_2`, it has two unpaired electrons in antibonding `MOs(pi^**3p_x^1, pi^**3p_y^1)`.
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