In group 15, the melting points of the elements :

Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Physical and Chemical Properties of Group 15th Elements Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

increase regularly on moving down the group.

decrease regularly on moving down the group.

first decrease upto As and then increase to Bi.

first increase from N to As and then decrease to Bi.

Text Solution

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The correct answer is:

Melting point ∝ heat of atomization ∝ strength of metallic bond

Strength of metallic bond depends on number of mobile electrons per atom and size of atom.

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