Question

Define atomicity of gas. State the atomicity of hydrogen, phosphorous and Sulphur.

Answer 1

• Atomicity is defined as the number of atoms present in a molecule of an element, compound or substance.
• The formula of the hydrogen molecule is ${\mathrm{H}}_2$ and it is known as diatomic. So, atomicity will 2.
• Formula of phosphorous is ${\mathrm{P}}_4$ and it is known as tetra atomic. So, atomicity will be 4.
• The formula of sulphur is ${\mathrm{S}}_8$ and it is known as polyatomic. So, atomicity will be 8.