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 ZO_(3) . (a) What is the valency of element Z ? (b) What will be the formula of fluoride of Z?

What is the valency of the element neon?

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.

A elements 'X' forms an oxide with formulat X_(2)O_(5) (i) State the valency of X. (ii) Write the formula of (a) chloride (b) sulphate (c )nitrate (d) phosphate of X.