Question

How do you name a compound with a polyatomic and a non-metal? Example:
`H_(2) PO_(4)^(-)`

Answer 1

We will use the given compound{DiHydrogen Phosphate)

We know the naming rule

• Cation+Anion

Find anion here

• Phosphate (PO_4-)

2 hydrogen ions

• Di hydrogen

Combine them

• DiHydrogen Phosphate

Answer 2

DiHydrogen Phosphate or Phosphoric acid is the compound here

How to identify and name

First identify the two ions

• Here they are PO_4- and H+

Now

Name them

• Phosphate and hydrogen

Combine and you are done