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Two elements are represented as $_{17} X^{35}$ and $_{12} Y^{24}$ . Find the incorrect relation from the following.

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Y will lose (2) electrons and X will gain electrons

The number of electrons lost, gained or shared by an atom is called its valency

Electronic configuration of X (2, 8, 7). Electronic configuration of Y (Atomic no = 2, 8, 2).

X will lose (2) electrons and Y will gain electrons.

answer is D.

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Detailed Solution

X is Cl, so each Cl gain 1e^-, it can’t lose e^- .
Y will loose two electrons.

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