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Predict the relative acidic strength amo...

Predict the relative acidic strength among the following:
`H_(2)O`, `H_(2)S`, `H_(2)Se`, `H_(2)Te`.

Text Solution

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As the electronegativity of the central atom decreases, the bond pairs of electrons tend to lie away and away from the central atom as we move from `H_(2)O` to `H_(2)Te`. In other words, the force of repulsion between the adjacent bond pairs is maximum in `H_(2)O` and minimum in `H_(2)Te`. Thus, `H_(2)O` has the largest bond angle `(104.5^(@))`.
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