Question

X is a metal with valency 2 and Y is a non metal with valency 3
@ write an equation to show how Y forms an ion
@ if Y is diatomic gas. Write an eqation for direct combination of X and Y to form a compound

Answer 1

X = metal of group 2 let it be calcium

Y = gas of group 15 let it be nitrogen

@ Y =Y +2

@ X+Y = X3Y2 (calcium nitride)