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An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound.

(a) What is the nature of the compound formed ?

(b) State whether the compound formed will conduct electricity or not.

(c) Give the formula of the compound formed.

(d) What is the valency of element X ?

(e) How many electrons are there in the outermost shell of an atom of element Y ?

1 Answer

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(a) Ionic compound.

(b) Yes .

(c) XY2 .

(d) 2 .

(e) 7 .

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