write the chemical formula of the compound formed when a second group element Y combines with a group 17 element X
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(a) The nature of the compound formed is ionic since X is metal and Y is non-metal.
(b) Yes because the compound form is an ionic compound.
(c) The formula of the compound formed is XY
2
since the electrovalency of X is 2 and Y is 1.
(d) The valency of element X is 2.
(e) 7 electrons since it belongs to group 17.
(b) Yes because the compound form is an ionic compound.
(c) The formula of the compound formed is XY
2
since the electrovalency of X is 2 and Y is 1.
(d) The valency of element X is 2.
(e) 7 electrons since it belongs to group 17.
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Answer:An element X from Group 2 of the periodic table reacts with Y from Group 17 to from a compound give the formula of the compound
(c) Element X belongs to group 2 so its valency is 2. Element Y is from group 17 so its valency is 1 (18-17=1). So, one atom of X combines with two atoms of Y to give a compound of the formula XY2.
Explanation:
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