Question

An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:

• A. ${\text{X}}_2\text{Y}$
• B. ${\text{XY}}_4$
• C. $\text{XY}$
• D. ${\text{XY}}_2$

Answer 1

The correct option is A ${\text{X}}_2\text{Y}$

With the help of criss-cross method valency is exchanged bearing a simple whole number ratio.