Question

The hydride of group 16 elements which shows greater lewis base character is

Answer 1

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Answer 2

Answer:

The answer is $H_{2} O$.

Explanation:

i. The group 16 in Modern Periodic table has five elements: oxygen, sulfur, selenium, tellurium, polonium.

ii. The hydrides of these elements are: $H_{2}O, H_{2}S, H_{2}Se, H_{2}Te, H_{2}Po.$

iii. Lewis base character is defined as the ability of a molecule to give away a lone pair of electron.

iv. All these hydrides contain a lone pair of electrons.

v. As we go down the group, the size of the molecule increases, and hence the diffusivity of the electrons increases in the outermost orbit.

vi. Hence, as we go down the group, the basicity of hydride molecules decreases.

vii. Hence, the first hydride of the group, $H_{2} O$, is the most basic hydride.

viii. Hence, The answer is $H_{2} O$.

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