Question

An element Z forms an oxide with formula Z2O3.What is its valency? [email protected]

Answer 1

• In the formula Z2O3, valency of Z is 3 while the valency of the element is 2.

• It is calculated by using the cross multiplication method.

• In the above mentioned problem, Z is nitrogen with 5 electrons in the valence shell and it requires 3 more electrons to get stabilized octet.