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: A. PH3 is a better reducing agent than NH3 because phosphorus is larger than nitrogen, so its valence electrons (including the lone pair) are less tightly held and more easily lost (oxidized). This ease of losing electrons makes it a stronger reducing agent.

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