NEET Chemistry The p-Block Elements (XII) Questions Solved

NEET - 2014

Acidity of diprotic acids in aqueous solutions increases in the order:-

(a) H2S<H2Se<H2Te
(b) H2Se<H2S<H2Te
(c) H2Te<H2S<H2Se
(d) H2Se<H2Te<H2S

(a) Acidic strength of hydrides increases as the size of central atom increases which weakens the M-H bond. Since, the size increases from S to Te thus acidic strength follows the order

H2S<H2Se<H2Te

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