Question

The term ${2AlCl}_3$ in a chemical equation represents:

• A. two atoms of aluminium chloride
• B. two molecules of aluminium chloride
• C. three atoms of chlorine
• D. two atoms of aluminium

Answer 1

Answer: (B)

two molecules of aluminium chloride

There are two molecules of aluminium chloride which are shown in the chemical symbol of the element.

Two aluminium atoms combine with six chlorine atoms to form two molecules of $AlC{l}_3$.

Hence, option $B$ is correct.