Question

Write the chemical formula for cupric oxide.

Answer 1

• The copper ion is denoted by ${\mathrm{Cu}}^{2+}$
• The oxide ion is denoted by ${\mathrm{O}}^{2-}$
• Interchanging the valencies ,we get
• ${\mathrm{Cu}}^{2+}⥂{\mathrm{O}}^{2-}$ becomes $\mathrm{CuO}$.

Therefore, The chemical formula for cupric oxide is $\mathrm{CuO}$.