An element X form group 2 of the periodic table reacts with an element Y from group 17 to form a compound. State whether the compound formed will conduct electricity or not. How many electrons are there in the outermost shell of an atom of element Y?
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Explanation:
(a) Ionic compound.
(b) Yes.
(c) XY2.
(d) 2.
(e) 7.
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