Elements P and Q combine to form a compound. If the ratio of valency of P & Q is 0.5 and sum of their valency is 6, then the formula of compound formed by P and Q is:
The valency of an element A is 3 and that of element B is 2. Write the formula of the compound formed by the combination of A and B.
A Compound XH is formed by combination of an element X with hydrogen. Find the valency of element X. State the formula of the compounds formed by combination of X with :
(a)Nitrogen (b) Oxygen