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Question
Which hydride among the following is the strongest reducing agent?
Options
AsH3
BiH3
PH3
SbH3
MCQ
Solution
BiH3
Explanation:
Among the given hydrides of group 15 elements, BiH3 is the strongest reducing agent. This is because as we move down the group, bond dissociation enthalpy decreases and thus reducing character increases.
Hence, the order is
PH3 < AsH3 < SbH3 < BiH3
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