Question

The polyatomic ion with the formula HPO42- is called

Answer 1

hydrogen phosphate

Explanation:

Answer 2

Answer : The polyatomic ion with the formula
`HPO_4^(2-)` is called hydrogen phsophate ions.

Explanation :

The rules for naming the ionic compounds with polyatomic ion is given as :

• The positive ion (cation) is written first.
• The negative ion (anion) is written next.
• The suffix is added at the end of the negative ion (anion). The suffix used is '-ate'.

In
`HPO_4^(2-)`, hydrogen ion combine with phosphate ion to give hydrogen phosphate ion.

Hence, the polyatomic ion with the formula
`HPO_4^(2-)` is called hydrogen phsophate ions.