An element X with atomic number 11 forms a compound With element Y with atomic number 8. The formula of the compound formed is
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The formula of the compound formed by an element X (of atomic number 11) and an element Y (of atomic number 8) is X2Y. The electronic configuration of element X is 1s2,2s2,2p6,3s1 ,so in order to attain nearest noble gas configuration it loses one electron and forms a monovalent cation X(+).
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the valency of X is 1, valency of Y is 8.
so b) X2Y is the general formula
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