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P Block Elements question

2014 · Q94
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P Block Elements question

2014 · Q94

NEETChemistryP Block ElementsMCQ+4 / −1
Acidity of diprotic acids in aqueous solutions increases in the order
  1. A
    H2S < H2Se < H2Te
  2. B
    H2Se < H2S < H2Te
  3. C
    H2Te < H2S < H2Se
  4. D
    H2Se < H2Te < H2S
View written solutionFree

Correct answer: A

As the atomic size increases down the group the bond length increases and the bond strength decreases and the cleavage of E - H bond become easier thus, more will be the acidity. Thus, order of acidity will be

H2S <\lt < H2Se <\lt < H2Te

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