Question Detail
Question
Which of the following is the correct formula for the compound formed between Mg2+ and Cl-?
Correct Answer
Option B is the correct answer.
Detailed Explanation
To balance charges, one Mg2+ ion (charge +2) requires two Cl- ions (each charge -1) to achieve electrical neutrality. The correct formula is MgCl2.
Hint
The total positive charge must equal the total negative charge.