Question

An element X show variable valency of 4 and 6 Write the chemical formula to its two oxides

Answer 1

Answer: The chemical formula for the two oxides are: $XO_2\text{ and }XO_3$

Explanation: In writing down the chemical formula for element X having valency 4 and 6 with oxide ion which has (-2) charge on it.

• Element X having +4 oxidation state and oxide ion having -2 oxidation state.

This molecule requires 2 atoms of oxide for every 1 atom of X.

Hence, the chemical formula becomes $XO_2$

• Element X having +6 oxidation state and oxide ion having -2 oxidation state.

This molecule requires 3 atoms of oxide ion for every 1 atom of X.

Hence, the chemical formula becomes $XO_3$

The formula for these two molecules are provided in the image attached.

Answer 2

Answer:

Explanation:

The chemical formula for the two oxides are:

Explanation: In writing down the chemical formula for element X having valency 4 and 6 with oxide ion which has (-2) charge on it.

Element X having +4 oxidation state and oxide ion having -2 oxidation state.

This molecule requires 2 atoms of oxide for every 1 atom of X.

Hence, the chemical formula becomes

Element X having +6 oxidation state and oxide ion having -2 oxidation state.

This molecule requires 3 atoms of oxide ion for every 1 atom of X.

Hence, the chemical formula becomes XO3