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Melting and Boiling Point

Question

The element with least melting point in VIA group is :
Se
O
S
Te

A

Se

B

Te

C

O

D

S

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Solution

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Physical properties such as melting point, boiling point etc. are dependent on Van der Waals force of attraction and Van der Waals force is directly dependent on molar mass.
$∴$ Order of melting point is $O < S < S e < T e < P o$ .

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