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JEE Main20241 Feb 2024Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

The strongest reducing agent amont the following is:

Options

  1. ANH 3
  2. BSbH 3
  3. CBiH 3
  4. DPH 3

Correct answer

C. BiH 3

Step-by-step solution

The reducing character of the hydrides of Group 15 elements increases from NH 3 to BiH 3 (Bismuthine) because the reducing character depends upon the stability of the hydride.The greater the unstability of hydride,the greater is the its reducing character. Since,the BiH 3 is the least stable (because the size of central atom is greatest & therefore its tendency to form stable covalent bond with small hydrogen atom decreases,as a result the bond strength decreases) in this series,hence the reducing character increas

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