Răspuns:
Va scriu formulele in ordinea data:
1. AgNO₃, Ag are valenta I
2. Al₂S₃, Al are valenta III, S are valenta II
3. Cu(OH)₂, Cu are valenta II, gruparea OH are valenta I
4. FeO-Fe are valenta II sau Fe₂O₃, unde Fe are valenta III.
5. P₂O₅, P are valenta V, O are valenta II
6. BaCl₂, Ba are valenta II, Cl are valenta I
7. H₂S, H are valenta I, S are valenta II
8. Ca(NO₃)₂, Ca are valenta II, gruparea NO₃ are valenta I
9. Al₂(CO₃)₂, Al are valenta III, gruparea CO3 are valenta II
10. ZnSO₄, Zn are valenta II, gruparea SO4 are valenta II
Explicație:
