The Formula For Sodium Sulfide Is Na2s. Explain What This Formula Means

The formula for sodium sulfide, Na2S, indicates that the compound is composed of two sodium ions (Na+) and one sulfide ion (S2-). The "2" subscript after the Na symbol indicates there are two sodium ions present in the compound for every one sulfide ion. This information can be used to determine the overall electric charge of the compound, which is neutral since each sodium ion has a +1 charge and each sulfide ion has a -2 charge, resulting in a net charge of 0.