Answer and Explanation:
A ionic compound can be dissociated into its ions: cations (with positive charge) and anions (with negative charge). The net charge of the compound is zero, so the sum of the charges of the ions must be zero.
We can see the ions in the compounds from the dissociation equilibrium, as follows:
a) NaBr ⇒ Na⁺ + Br⁻
Cation: Na⁺
Anion: Br⁻ (bromide)
b) AlCI₃ ⇒ Al³⁺ + 3 Cl⁻
Cation: Al³⁺
Anion: Cl⁻ (chloride)
c) Ba₃(PO₄)₂⇒ 3 Ba²⁺ + 2 PO₄³⁻
Cation: Ba²⁺
Anion: PO₄³⁻ (phosphate)
d) Mn(NO₃)₂ ⇒ Mn²⁺ + 2 NO₃⁻
Cation: Mn²⁺
Anion: NO₃⁻ (nitrate)