Question

In a chemical formula of a diatomic ionic compound, the charge on the anion is -3. Find out the charge on the cation.

• A. Less than 4
• B. More than 4
• C. Equal to 4
• D. Cannot be determined

Answer 1

The correct option is C

Equal to 4

Since the overall compound must be neutral, the positive and negative charges balance each other.
As the compound is diatomic, it means that there are only one anion and one cation.
Hence, valency of anion + valency of cation = 0
Thus, valency of cation = +3.