Question

Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.

Answer 1

(a) For element X :
                    X → X² + 2e^-
For element Y :
                    Y + 3e^- → Y^3-
(b) Since Y is a diatomic gas hence it combines with X as :
                  3X + Y₂ → X₃Y₂