Two elements X and Y have atomic numbers 20 and 17 respectively. To
which period of the modem periodic table do these two elements belong? What
type of bond will be formed between them and why? Also give the chemical
formula of the compound formed. I need answer on written paper through photo
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Elements X and Y belong to different periods. Element X belongs to Period 4. Element Y belongs to Period 3. An ionic bond will be formed between them. This is because, by donating 2 electrons from the atom of Element X to 2 atoms of Element Y, a strong electrostatic attraction is formed. This because this donating/accepting of electrons leads to the formation of a cation [X] and anion [Y]. Hence, an ionic bond is formed. The chemical formed is XY2.
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