Elements X and Y have 2 and 6 electrons in th | vedclass

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(A) The valence shell of element $X$ contains $2$ electrons,so it will lose $2$ electrons to achieve a stable octet,forming an ion $X^{2+}$.The valenc

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$XY$

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(A) The valence shell of element $X$ contains $2$ electrons,so it will lose $2$ electrons to achieve a stable octet,forming an ion $X^{2+}$.The valence shell of element $Y$ contains $6$ electrons,so it will gain $2$ electrons to achieve a stable octet,forming an ion $Y^{2-}$.When $X^{2+}$ and $Y^{2-}$ combine in a $1:1$ ratio,the resulting compound formula is $XY$.

Elements $X$ and $Y$ have $2$ and $6$ electrons in their valence shells,respectively. If they combine,what will be the possible formula of the compound formed?

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