Correct each of the following formulas: (a) Barium oxide is 3302 (b) lron (ll) nitrate is Fe (NO3) 3. (c) Magnesium sulfide is MnSO3.

A. Barium oxide : BaO

B. Iron (II) nitrate : Fe (NO3) 2

C. Magnesium Sulfide : MgS

Explanation:

A. Barium symbol is Ba and it is a divalent cation and oxide is also divalent anion hence the formula Bao.

B. Iron is in + 2 state symbol is Fe+2

&nitrate is A Monovalent polyatomic anion and symbols is NO3-

Hence formula is Fe (NO3) 2

C. Magnesium symbol is Mg and it is a divalent cation, Mg+2

And sulfide is also Bivalent anion S2-

Hence formula MgS.