Write the formula of the compounds formed by the following ions.
- Mg2+ and S2-
- Cu2+ and OH-
Name the compounds formed in each case.
Answer:
- Ions Mg2+ S2-
Valencies 2 ,2
Compound: Mg2S2 or MgS; Magnesium sulphate - Ions Cu2+ OH-
Valencies 2 ,1
Compound: Cu(OH)2; Copper (II) hydroxide