Question

7. Write the chemical name of the following compound.

(g) $\mathrm{HgO}$

Answer 1

• $\mathrm{HgO}$ is formed when ${\mathrm{Hg}}^{2+}$ combine with ${\mathrm{O}}^{2-}$.
• The chemical name of positive radical ${\mathrm{Hg}}^{2+}$ is mercuric or mercury(II) ion and negative radical ${\mathrm{O}}^{2-}$is oxide ion.
• The name of the positive radical or metal ion is written first followed by the negative radical while writing the name of the compound.
• Hence, the chemical name of $\mathrm{HgO}$ is Mercuric oxide or Mercury (II) oxide.