Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.

1. Noble gases are sparingly soluble in water.

2. Noble gases have very high melting and boiling points.

3. Noble gases have weak dispersion forces.

4. Noble gases have large positive values of electron gain enthalpy.

Doubtly Asked 30 Oct 2026 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 2. Noble gases have very high melting and boiling points.

Key idea: noble gases are monoatomic and held only by very weak dispersion forces.

Weak dispersion forces mean very low melting and boiling points, so statement 2 (very high) is incorrect.
They are sparingly soluble in water, so 1 is correct.
Weak dispersion forces: 3 is correct.
Their stable octet/duplet configuration gives large positive electron gain enthalpy: 4 is correct.

Hence the incorrect statement is option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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