Question

Give one word for the following statement:

Number of atoms present in one molecule of an element or a compound.

Answer 1

• The number of atoms present in one molecule of an element or a compound is known as atomicity.
• The molecules of the element can be:
• Monoatomic: Examples are helium $\left(\mathrm{He}\right)$, zinc $\left(\mathrm{Zn}\right)$, etc.
• Diatomic: Examples are oxygen (${\mathrm{O}}_2$), nitrogen (${\mathrm{N}}_2$), etc.
• Triatomic: An example is Carbon dioxide (${\mathrm{CO}}_2$).
• Polyatomic: An example is sulfur (${\mathrm{S}}_8$).