Question

Explain Why?
1. An oxide ion 0-2 has -2 charge.
2. Magnesium ion, Mg 2 has +2 charge.
3. Sulphide ion, S2 has -2 charge.​

Answer 1

Answer:

An oxide ion and a sulphide ion have charge (-2) as oxygen and sulphur both have 6 electrons in their valence shell and has tendency to gain 2 electrons in order to gain octet state in their valence shell . Magnesium has atomic number 12 and has 2 electrons in its valence shell and on losing those two electrons it has charge (+2).