Answer:
The correct answer is A. a positive and negative ion
Explanation
Ionic Bond:
Ionic bond is formed when one atom donate electrons and become positive and other atom accept electrons and become negative. The such a bond formed between cations and anion is known as ionic bond.
- Neutral atoms have no charges like positive and negative, so they cant form ionic bond.
- Same charges always repel to each other, so there is no possibility of bond.
- Two positive ions cant make ionic bond sue to similar charges.
- Two negative ions cant make ionic bond sue to similar charges.
