Question

30Which of the following is the correct formula for the compound formed by sulfur (oxidation number of -2) and sodium (oxidation number of +1)?Select one:a. NaSb. Na7S6c. NaS2d. Na2S

Answer 1

d. Na2S

Step-by-step explanation

Since the oxidation number of sulfur is -2 and that of sodium is +1. For a compound to be formed between the two elements, one atom of sulfur will need two atoms of sodium to form a compound. The correct formula for the compound formed between them will be Na2S