Answer:
2PO₄³⁻ + 3Ni²⁺ → Ni₃(PO₄)₂(s)
Step-by-step explanation:
In chemistry, an ionic equation is a equation in which the electrolytes in aqueous solution are expressed as dissociated ions. Solids are written as complete molecules, not ions.
For the reaction:
2K₃PO₄(aq) + 3NiCl₂(aq) → Ni₃(PO₄)₂(s) + 6KCl(aq).
Ionic equation is:
6K⁺ + 2PO₄³⁻ + 3Ni²⁺ + 6Cl⁻ → Ni₃(PO₄)₂(s) + 6K⁺ + 6Cl⁻
As K⁺ and Cl⁻ doesn't change, the ionic equation is:
2PO₄³⁻ + 3Ni²⁺ → Ni₃(PO₄)₂(s)