Respuesta :
1 . It is formed when the element chlorine (a halogen) gains an electron or when a compound such as hydrogen chloride is dissolved in water or other polar solvents.
Answer:
1. Univalent negative ion (Cl-)
2. Divalent negative ion (O2-)
3. Divalent positive ion (Mg2+)
4. Divalent negative ion (S2-)
5. Divalent negative ion (CO3)^2-
6. Univalent negative ion (NO3) ^-