Formula for Ionic Compounds

Question

Magnesium bromide =

Ammonium hydroxide =

Copper (II) sulfite =

Answer 1

Magnesium bromide: magnesium (Mg) is 2+ and bromide (Br) is 1- so it takes 2 bromides. MgBr₂

Ammonium hydroxide: ammonium (NH4) is 1+ and hydroxide (OH) is 1-. NH₄OH

Copper(II) sulfite: copper (Cu) is 2+ as indicated by (II) and sulfite (SO3) is 2-. CuSO₃