Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) JEE ADVANCED Previous Year Question Single Correct MCQ
Published on: August 12, 2026

Highly pure dilute solution of sodium in liquid ammonia :

A
shows blue colour.
B
exhibits electrical conductivity.
C
produces sodium amide.
D
produces hydrogen gas

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The correct answer is:
CHECK THE SOLUTION.

(a,b) M + (x + y) NH 3 ⎯→ [M (NH 3 ) x ] + + [e(NH 3 ) y ] –

The electrical conductivity is due to the solvated ions and blue colour is due to solvated electrons.

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