1. Tardigrade
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  3. Chemistry
  4. Arrange H2O , H2S and H2Se in order of increasing acidity.

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Q. Arrange $ H_2O $ , $ H_2S $ and $ H_2Se $ in order of increasing acidity.

AMUAMU 2017

Solution:

The acidic character of the hydrides of group $16$ elements increases down the group i.e., $H_2O > H_2S < H_2Se$ as $E —H$ bond strength decreases down the group, thus, release of $H^+$ becomes easier.