Question

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

• A. ${\mathrm{AB}}_4$
• B. ${\mathrm{A}}_2\mathrm{B}$
• C. ${\mathrm{AB}}_2$
• D. $\mathrm{AB}$

Answer 1

The correct option is C

${\mathrm{AB}}_2$

Element A is tetravalent means it has four bonds.

Element B is divalent means it has two bonds.

The structure of A with four bonds would be, $=\mathrm{A}=$

So, on both sides of A, the element B is attached as $\mathrm{B}=\mathrm{A}=\mathrm{B}$

Thus, A is tetravalent and B is divalent.

Hence the correct answer is Option C: ${\mathrm{AB}}_2$