# What is the name of SO_4^(-2)?

##### 1 Answer
May 4, 2016

This is the $\text{sulfate ion}$.

#### Explanation:

The oxidation state of sulfur in sulfate ion is $+ V I$. Lewis representations of ${\left(O =\right)}_{2} S {\left(- {O}^{-}\right)}_{2}$ or ""^(2+)S(-O^-)_4 are reasonable.