2021 The p-Block Elements (Group 15 to 18)Group 18 Elements – Noble Gases Easy Question 4 of 11 in The p-Block Elements (Group 15 to 18)

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

A Noble gases have very high melting and boiling points
B Noble gases have weak dispersion forces
C Noble gases have large positive values of electron gain enthalpy
D Noble gases are sparingly soluble in water

The answer is A.

Solution

Noble gases have only weak dispersion forces between their atoms. So their melting and boiling points are very low, not very high – this statement is incorrect.

Concept properties of noble gases

The p-Block Elements (Group 15 to 18) in past papers

11 questions from this chapter have appeared across 5 exam years.