Q44. PH3 is a better reducing agent than NH3 because:
(a) PH3 can give its lone pair of electron easily
(b) Bond dissociation enthalpy of P-H is low
(c) Bond dissociation enthalpy of P-H is high
(d) P

Question

Q44. PH3 is a better reducing agent than NH3 because:
(a) PH3 can give its lone pair of electron easily
(b) Bond dissociation enthalpy of P-H is low
(c) Bond dissociation enthalpy of P-H is high
(d) PH3 is tetrahedral is shape

FirstInTest · Accepted Answer

Correct answer: b. Just because it easily loses electrons, so when it combines with any other element in order to form a compound it gives its electron to that element and reduce it. That's why it is a strong reducing agent. A lower bond dissociation enthalpy (BDE) of P-H means it's easier to break, contributing to its reducing character.

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