* Sodium (Na) is a Group 1 element, meaning it typically forms a +1 ion (Na⁺).

* Sulfur (S) is a Group 16 element, meaning it typically forms a -2 ion (S⁻²).

To balance the charges, you need two sodium ions (+1 each) to combine with one sulfide ion (-2):

2(+1) + (-2) = 0

Therefore, the overall charge of sodium sulfide is neutral.