What is the formula for sodium sulfide? A NaSO_(4) B Na_(2)S C NaS D Na_(2)SO_(4)

The correct answer is B) $Na_{2}S$.<br /><br />The formula for sodium sulfide is $Na_{2}S$. Sodium sulfide is an inorganic compound composed of sodium (Na) and sulfur (S). The chemical formula indicates that there are two sodium atoms bonded to one sulfur atom in the compound.<br /><br />Option A) $NaSO_{4}$ is the formula for sodium sulfate, which is a different compound. Option C) NaS is not a correct formula for any common compound. Option D) $Na_{2}SO_{4}$ is the formula for sodium sulfate, not sodium sulfide.<br /><br />Therefore, the correct formula for sodium sulfide is $Na_{2}S$.