1. NaF:
Na = +1, F = -1
2. NaCl:
Na = +1, Cl = -1
3. AlCl3:
Al = +3, Cl = -1
4. Cl2:
Cl = 0 (в элементарном состоянии)
5. O3:
O = 0 (в элементарном состоянии)
6. KOH:
K = +1, O = -2, H = +1
7. Mg(OH)2:
Mg = +2, O = -2, H = +1
8. HNO2:
H = +1, N = +3, O = -2
9. H2SO4:
H = +1, S = +6, O = -2
10. Al2(SO4)3:
Al = +3, S = +6, O = -2