an element X from group 1 combines with an element Y from group 17 to form a compound both X and Y belongs to the period 2
a. Give the formula if the compound formed
b. Will the compound be ionic or covalent
c. Give the electronic dot structure

Dear student,

Given X (Group 1) & (Period 2) so X is lithium(Li)
Y(Group 17)& (Period 2) so Y is Fluorine(F)
(a) So the formula of the compound formed by X & Y is LiF
(b)The compound LiF is ionic because Fluorine(F) is electronegative. And we know that when a electronegative atom present the compound is ionic.
(c)Here is the electron dot structure of the LiF compound  Regards.