Question

18 The noble gas molecules are
4 points
a. Monoatomic
b. Diatomic
c. Triatomic
d. Tetratomic​

Answer 1

Answer: Monoatomic

Explanation: Noble gases are mono atomic because they have valency 0. Hence their atoms can exist independently. Hence they are monoatomic.

Hope it helps you. All the best.

Answer 2

A ) Monoatomic

Noble gas molecules are completely non reactive hence they are Monoatomic in nature

They show very less reactivity hence we never see any noble gas in di or triatomic form

Example : helium , argon etc