Question

Explain Why?
1. An oxide ion O ? has -2 charge.
2. Magnesium ion, Mga has +2 charge
3. Sulphide ion, s'has -2 charge,​

Answer 1

Answer:

1-Oxygen needs 2 electrons to complete the octet hence -2 charge.

2- Mg needs. to donate two electrons to complete the octet. Hence+2 charge

3-Sulphur needs 2 electrons to complete the octet hence -2 charge.