Home Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Physical and Chemical Properties of Group 15th Elements Which of the following statements is (are) c…
Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Physical and Chemical Properties of Group 15th Elements Single Correct MCQ
Published on: August 13, 2026

Which of the following statements is (are) correct ?

A
The hydrides of group 15 elements act as oxidising agents
B
The hydrides of group 15 elements act as reducing agents
C
The oxidising power increases in going from NH3 to BiH3
D
The reducting power increases in going from NH3 to BiH3

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(b, d) All acts as reducing agent and the increasing order of reducing character is NH3 < PH3 < AsH3 < BiH3 on account of decreasing M–H bond dissociation energies with increasing size of central atoms.

NH3 is only a mild reducing agent.

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