# What is the simplest formula for copper (II) and nitride?

##### 1 Answer

Oct 28, 2016

#### Explanation:

The easiest way of thinking about the combination of ions is by using the method I recall as being called , "the swap and drop"

So we have two ions,

now we swap the charge of each and drop, Note that the two ions have to be of opposite charge.

Now combine,

This is the simplest formula.