Question

Element X is ametal with valency 2 Y is a non metal with valency 3.a) write an equation to show how Y forms an ion .b) if Y is a diatomic gas write an equation for the direct combination of X and Y to form a compound ​

Answer 1

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X element is a metal so its tend to lose the valency electron which are 2 electrons

Y is a nnonmetal so its tend to gain or share the valency electrons which are 3

So

Y + 3 e = > Y^-3 gain

Y + Y => Y2 each atom share 3 electrons

When X combined with Y

3X + Y2 => X3Y2 as example

3Mg + N2 => Mg3N2

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Answer 2

Answer:

The element with valency 2 is Mg

And the element with valency 3 is N