Question

What is the atomicity of carbon dioxide and water?

Answer 1

We know that Atomicity can be defined as the total number of atoms that is present in a molecule of an element. Molecules of different elements have a different number of atoms present in it. Atomicity is the term that is associated with molecules. It is sometimes referred to as valency.

Complete answer:
As we know, the atomicity of a molecule can be defined as a measure of the total number of atoms present in a molecule of an element. Thus, Atomicity can be classified into:
Monoatomic: Molecules of elements which contain only a single atom of that element are termed as monatomic and thus atomicity of these molecules is one.
Diatomic: Molecules of elements that are composed of two atoms of that element are termed as diatomic. Diatomic molecules have atomicity equals to two.
Triatomic: Molecules of elements that are composed of three atoms of that element are termed as triatomic. Since, these molecules are composed of three atoms; they have atomicity equal to three.
Tetratomic: Molecules of elements that are composed of four atoms of that element are termed as tetratomic.
Polyatomic: Molecules of elements that are composed of more than four atoms of that element are termed as polyatomic.
Atomicity is outlined because the total ranges of atoms that represent a molecule. The atomicity of carbonic acid gas is three (one atom of carbon and a couple of atoms of oxygen) while water is additionally three (two atoms of hydrogen and one atom of oxygen).

Note:
Remember that some elements like carbon do not have very simple structures. They may contain indefinite numbers of atoms that are bonded together to form a molecule of that element. In those cases, their atomicity cannot be calculated and is generally considered.