The chemical reaction for Copper (II) sulfate and Ammonium phosphate? What would be the net ionic equation?

Net ionic equation:

3Cu²⁺(aq) + 2PO₄³⁻(aq) → Cu₃(PO₄)₂(s)

Net ionic equation ...

Your teacher expects you to write the net ionic equation for ...
3CuSO4(aq) + 2(NH4)3PO4(aq) --> Cu3(PO4)2(s) + 3(NH4)2SO4(aq)
3Cu^2+ + 2PO4^3- --> Cu3(PO4)2(s) ..... net ionic equation

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Just in case you wanted to know what really goes on...

When you say "ammonium phosphate" you could mean (NH4)3PO4, but that is unstable and in water it will hydrolyze (react with water).  A solution of ammonium phosphate will consist of NH3(aq), NH4^+ and H2PO4^- ions.  PO4^3- ion are not found in water except when it is very basic, and a solution of copper(II) sulfate is slightly acidic. "Phosphate" is found as H2PO4^-.

The net ionic equation for Cu2+ and H2PO4^- is:
3Cu2+ + 2H2PO4^- --> Cu3(PO4)2(s) + 4H+
Notice that the end result is still insoluble copper(II) phosphate.  The only difference is with the "phosphate."

ask your teacher then thats what they are there for...