An element Z forms an oxide `ZO_(3)`.
(a) What is the valency of element Z ?
(b) What will be the formula of fluoride of Z?

An element A forms an oxide A_(2)O_(5) . (a) What is the valency of element A ? (b) What will be the formula of chloride of A ?

An element Z forms an oxide with formula Z,O3. What is its valency?

The valency of an element A is 4. Write the formula of its oxide.

An element Z has a valency of 3. What is the formula of oxide of Z ?

An element has Z = 7 . What is the valency of the element ? Also name the element.

For an element, Z = 9. The valency of this element will be :

An element has valency 3. Write the formula of its oxide.

An element X is in group of the periodic table: (a) What will be the formula of its chloride? (b)What will be the formula of its oxide?