Question

An element B shows valencies of 4 and 6. Write the formulae of its two oxides.

Answer 1

The valence of Oxygen is -2.

So when B shows the valence as 4 the formula formed is . And when B shows the valence as 6 the formula formed is .

Hence, when an element B shows valence numbers of 4 and 6, the formulae of its two oxides is