Solution:Concept- While the atomicity of non-metals varies from diatomic to polyatomic, noble gases, which are non-metals, are typically monoatomic. If the atomicity is three or four, the substance can also be described as polyatomic, triatomic, or both. The element sulphur has an atomicity of eight, which is the highest. Different allotropes of an element have different atomicities. For example, despite the fact that both diamond and graphite are made entirely of carbons, their atomicities differ.
The quantity of atoms in a molecule is known as its atomicity. The number of atoms in a molecule is added to determine atomicity.
Atomicity is basically the number of atoms present in a compound or element.
For example: Oxygen contains two atoms. So, it’s diatomic.
Silver contains one atom. So, it's monoatomic.
Hence, the correct answer is option (1).