I) A chemical bond is a strong force of attraction that holds atoms or ions together in a molecule or crystal lattice. It results from the electrostatic attraction between oppositely charged ions or

f)

i) A chemical bond is a strong force of attraction that holds atoms or ions together in a molecule or crystal lattice. It results from the electrostatic attraction between oppositely charged ions or the sharing of electrons between atoms.

ii) The compound is ammonium phosphate, $(\text{NH}_4)_3\text{PO}_4$.

1. Ionic bonds: These are the electrostatic attractions between the positively charged ammonium ions ($\text{NH}_4^+$) and the negatively charged phosphate ions ($\text{PO}_4^{3-}$).
2. Covalent bonds: These are found within the polyatomic ions.
   • N-H bonds within each $\text{NH}_4^+$ ion.
   • P-O bonds