Question

Molecules are of three types: Molecule of an atom, Molecule of an element and Molecule of a compound.

• A. True
• B. False

Answer 1

The correct option is A True

Molecule :

• A molecule is a group of two or more atoms chemically bonded together.
• A molecule is the smallest particle of an element or a compound that has properties of the element or the compound and can exist in a free state.

Molecule of an atom:

• Noble gas molecules are monoatomic.
• Noble gases are chemically unreactive and do not combine. Hence, one molecule of a noble gas has one atom.
• For example, $\mathrm{Neon}\left(\mathrm{Ne}\right),\mathrm{Argon}\left(\mathrm{Ar}\right),\mathrm{e}.\mathrm{t}.\mathrm{c}.$

Molecule of an element:

• The molecule of an element is made of the same type of atom that is an atom of the same element.
• For example, $\mathrm{Hydrogen}\left({\mathrm{H}}_2\right),\mathrm{Oxygen}\left({\mathrm{O}}_2\right),\mathrm{Nitrogen}\left({\mathrm{N}}_2\right),\mathrm{e}.\mathrm{t}.\mathrm{c}$

Molecule of a compound:

• The molecule of a compound is made of two or more different kinds of atoms.
• For example, $\mathrm{Carbon}\mathrm{dioxide}\left({\mathrm{CO}}_2\right),\mathrm{Water}\left({\mathrm{H}}_2\mathrm{O}\right),\mathrm{Hydrochloric}\mathrm{acid}\left(\mathrm{HCl}\right),\mathrm{e}.\mathrm{t}.\mathrm{c}.$

​Thus, the given statement is true. I.e., Molecules are of three types: The molecule of an atom, the molecule of an element, and the molecule of a compound.