Question

Solve these problems in your notebook...

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

2. An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed?​

Answer 1

Answer:

Formula for the oxide formed by the element B (valency 4) can be worked out by crossing over the valencies of the constituent elements. Therefore, formula of the oxide of element B is B2O4.

Explanation:

Formula for the compound formed between X and Y can be worked out by crossing the valencies of the constituent elements. Therefore, formula of the compound is X2Y3.