7. An element y showstwo valencies of 3 and 5. Work out the formula of

1.	7. An element y showstwo valencies of 3 and 5. Work out the formula of its two oxides.
Answer» Answer: Explanation: Let the ELEMENT be “X” CASE 1: Valency of X= +3 Valency of Oxide “O”= -2 Therefore, the FORMULA for the oxides of the element X= X2O3 Case 2: Valency of X= +5 Valency of O= -2 Therefore, the formula for the oxides of the element X= X2O5

7. An element y showstwo valencies of 3 and 5. Work out the formula of its two oxides.

Answer»

Answer:

Explanation:

Let the ELEMENT be “X”

Valency of X= +3

Valency of Oxide “O”= -2

Therefore, the FORMULA for the oxides of the element X= X2O3

Case 2:

Valency of X= +5

Valency of O= -2

Therefore, the formula for the oxides of the element X= X2O5