Question

an element a is tetravalent and another element b is divalent .Then
the formula of compound formed from these elements will be

Answer 1

trivalent becoz 2 bonds will be Covalently bonded and 2 left atoms of elements a combine to form one more bond ...

** so 3 bonds will be formed ( trivalent ) **

hope it helps mark it as a branlist

Answer 2

ANSWER:-

Valency of A is 4. Valency of B is 2.

A -------> 4

×

B ---------> 2

(cross multiply)

Compound formed by the combination of A and B is $\it{AB_2}$

EXAMPLE:-

$CO_2(Carbon Dioxide)$

HOPE IT'S HELPS YOU ❣️