Question

what is the atomicity of the following substance He , CO2​

Answer 1

the number of atoms in the molecules of an element.

atomicity of He is one

The atomicity of carbon dioxide is 3(1 atom of carbon and 2 atoms of oxygen)

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Answer 2

Answer:

The atomicity of carbon dioxide is 3(1 atom of carbon and 2 atoms of oxygen) and that of water is also 3(2 atoms of hydrogen and 1 atom of oxygen).

As helium is a noble and inert gas, it contains only one atom of helium, thus its atomicity is 1 and it is a mono atomic molecule. Ozone - As 3 atoms of oxygen make one ozone molecule, its atomicity is 3 and it is a triatomic molecule