Question

1. explain how ionic compounds with polyatomic ions are both ionic and covalent in terms of their bonding.

Explanation:

Ionic compounds with polyatomic ions have ionic bonds between the polyatomic ion (as a whole) and the other ion (cation or anion). Within the polyatomic ion, there are covalent bonds. For example, in $\ce{NaNO3}$, the bond between $\ce{Na+}$ and $\ce{NO3-}$ is ionic. Inside the $\ce{NO3-}$ ion, the bonds between $\ce{N}$ and $\ce{O}$ atoms are covalent.

Answer:

Ionic compounds with polyatomic ions have ionic bonds between the polyatomic ion (as a whole) and the other ion (cation or anion). Within the polyatomic ion, there are covalent bonds. For example, in $\ce{NaNO3}$, the bond between $\ce{Na+}$ and $\ce{NO3-}$ is ionic. Inside the $\ce{NO3-}$ ion, the bonds between $\ce{N}$ and $\ce{O}$ atoms are covalent.