Question

7. Name the following compounds and also name the elements present in each of them. (You can ignore the numbers when naming these compounds.)

vi. ${\mathrm{PbCl}}_2$

Answer 1

Part 1: Definition of compound:

A compound is defined as a pure substance that is made up of two or more elements in a fixed ratio by mass.

Part 2: Name of ${\mathrm{PbCl}}_2$:

• Elements combine with chlorine to form chlorides.
• The name of ${\mathrm{PbCl}}_2$ is Lead chloride.
• The elements present in ${\mathrm{PbCl}}_2$ are lead $\left(\mathrm{Pb}\right)$ and chlorine $\left(\mathrm{Cl}\right)$.

Hence, the name of ${\mathrm{PbCl}}_2$ is Lead chloride.