The sulfide ion is S2- while the somewhat unusual mercury I ion is Hg22+
the 2+ and 2- ions will combine in a 1:1 ratio ro form an electrically neutral compound.
Sulfur-anion/sulfid [ S-2 ] got two negative charges. Quicksilver Hg is two times in molecular formula. So it has to be [ Hg+1 ] for a neutral charged compound.
The formula of sodium sulfide, Na2S, indicates that each sodium sulfide molecule contains two sodium (Na) ions and one sulfide (S) ion. The ratio of sodium ions to sulfide ions in sodium sulfide is 2:1.
Iron (II) sulfide
The formula for barium sulfide is BaS. Barium has a charge of +2 and sulfide has a charge of -2, so they combine in a 1:1 ratio to form a neutral compound.
Potassium has a formal charge of +1, and sulfide has a formal charge of -2, so: K2S
Sulfur-anion/sulfid [ S-2 ] got two negative charges. Quicksilver Hg is two times in molecular formula. So it has to be [ Hg+1 ] for a neutral charged compound.
The formula for cuprous sulfide is Cu2S. Copper (I) or cuprous has a +1 charge, whereas Sulfur has a charge of -2. Cu^(-1) + S^(-2) -> Cu2S (The subscript is 2)
The formula of sodium sulfide, Na2S, indicates that each sodium sulfide molecule contains two sodium (Na) ions and one sulfide (S) ion. The ratio of sodium ions to sulfide ions in sodium sulfide is 2:1.
Iron (II) sulfide
Potassium has a formal charge of +1, and sulfide has a formal charge of -2, so: K2S
The formula for barium sulfide is BaS. Barium has a charge of +2 and sulfide has a charge of -2, so they combine in a 1:1 ratio to form a neutral compound.
The chemical formula for rubidium sulfide is Rb2S. Rubidium is a group 1 element with a +1 charge, while sulfide is a group 16 element with a -2 charge, so two rubidium ions are needed to balance the charge of one sulfide ion.
The formula for cuprous sulfide is Cu2S. Copper (I) or cuprous has a +1 charge, whereas Sulfur has a charge of -2. Cu^(-1) + S^(-2) -> Cu2S (The subscript is 2)
The formula of sodium sulfide is Na2S, where the 2 should be a subscript. It means that in the ionic compound there are 2 moles of sodium ions for every 1 mole of sulfide ions.
The chemical name for the compound with the formula Na2S is sodium sulfide. In this compound, sodium (Na) is in the +1 oxidation state, and sulfur (S) is in the -2 oxidation state. The subscript "2" in the formula indicates that there are two sodium atoms for every one sulfur atom in the compound.
The chemical formula for copper(I) sulfide is Cu2S.
The chemical formula for mercury 1 carbide is Hg2C.