Question

Element X has 2 electrons in its outer shell while Y has 6. The compound formed by X and Y has the formula a. X2Y b. XY3 c. XY2 d. XY

Answer 1

Explanation:

D. XY

as X have to get rid of two electrons

and Y need those same number of electrons

Answer 2

Answer:

The formula of the compound formed by the elements X and Y is XY.

Explanation:

• Element X has 2 electron in its outer shell .
• This means it has the tendency to lose two electrons to form octate in its outer shell.
• So for bond formation,it will lose two electrons and will form X2+ ion.
• The element Y has six electrons in its outer shell.
• Then it will easily accept two electrons and form octate in its outer shell.
• So it will form Y2- ion .
• As one X atom has tendency to lose two electrons and one Y atom has tendency to accept two electrons, one X atom will bond with one Y atom to form an ionic bond forming the Compound "XY".
• So the formula of the Compound is XY.