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Question

How does the reducing character of hydrides of group 15 elements vary in the periodic table?


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Solution

Hydrides: Hydrides are those chemical compounds that are formed by the reaction of hydrogen with other elements.

Reducing character of hydrides of group 15:

  • The reducing character of a compound depends upon the ease of production of the hydrogen atom.
  • As we move down the group, the bond strength of group 15 hydrides decreases due to an increase in the size of atoms.
  • So, as the bond strength decrease, the ease to produce increase along with the group.
  • Hence, the reducing character of group 15 hydrides increases down the group.
  • Therefore, the trend of the reducing strength is: BiH3>SbH3>AsH3>PH3>NH3

Hence, the reducing character of hydrides of group 15 elements increases from top to bottom.


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