The formula of a compound is `X_(3)Y`. The valencies of element X and Y will be respectively :

H2Y is the formula of a compound. What is the valency exhibited by Y?

The formulae of the oxides of two elements X and Y are XO" and "Y_(2)O_(3) respectively. (i) Find the valencies of X and Y. (ii) Identify the groups .in which they would be placed in the Modern Peri-odic Table. (iii) Name one more element belonging to each of these groups.

Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The element X and Y are most likely to be respectively :

What is the formula of the compound formed by elements X and Y if atoms of element Y are in hcp arrangement and those of the element X occupy 2//3 rd of tetrahedral voids?

The simplest formula of a compound containing 50% of element X (at. mass 10) and 50% of element Y (at. mass 20) is :

An element forms two compounds X and Y in which the element exhibits the valency of 2 and 3 respectively. What is the ratio of the equivalent masses of the element in the two compound?