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In X—H—Y, X and Y both are electronegative elements

1. Electron density on X will increase and on H will decrease
2. In both electron density will decrease
3. In both electron density will increase
4. Electron density decrease on X and will increase on H

Correct answer: Electron density on X will increase and on H will decrease

Solution

Since both X and Y are electronegative, they will pull electron density away from the hydrogen atom. This results in an increase in electron density on X and a decrease on H.

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