# Question #14e7a

Feb 6, 2014

The most common polyatomic ion with a -3 charge is $P {O}_{4}^{- 3}$ which is phosphate. However, $A s {O}_{4}^{- 3}$ arsenate and $B {O}_{3}^{- 3}$ Borate also are negative polyatomic ions with charges of -3.