An element X from group 1 combines with an element Y from group 17 to form a compound both X and Y belongs to period second a give the formula of compound formed be will the compound be ionic or covalent C give its electronic dot structure
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group1 period 2- Li
group17 period 2 -F
A-because Li has +1 charge and F has -1charge so formula= LiF
B- ionic because total transfer of electrons take place
C-
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