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29/09/2021 8:44 pm
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An element X of atomic number 12 combines with an element Y of atomic number 17 to form a compound XY2. State the nature of chemical bond in XY2 and show how the electron configurations of X and Y change in the formation of this compound.
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29/09/2021 8:45 pm
XY2 forms ionic bond. The electronic configuration of X changes from 2, 8, 2 to 2, 8, it donates its 2 electrons to two Y atoms. Hence, the electronic configuration of Y changes f rom 2, 8, 7 to 2, 8, 8 giving the compound XY2.