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.

XY₂ forms the ionic bond. The electronic configuration of X changes from 2, 8, 2 to 2, 8, as it donates its 2 electrons to two Y atoms. Therefore, the electronic configuration of Y changes from 2, 8, 7 to 2, 8, 8 giving the compound XY₂.

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Updated on: 10-Oct-2022

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