Question

What is the formula formed by a copper (II) cation and a nitride anion?

Answer 1

Answer:

copper (II) nitride - Cu₃N₂

Explanation:

So we have two ions,

copper as a cation having 2 positive charge and nitrogen as an anion having 3 negative charges.

Cu2+ and N3−

now we swap the charge of each and drop.

Cu3  and  N2

Now combine,

Cu3N2

Hope it helps :)