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Grade: 11
        n ncert part 1 xii pg 168 14th line it is written that BiH3 is a stronger reducing agent than Nh3 while the basic charcater of ammonia is more how is this possible. acc. to me bettr reducing agent=better electron donor = more basic compund.....
9 years ago

Answers : (1)

879 Points

Dear student,

A good reducing agent is something that can easily lend a hydrogen atom.
Nitrogens Hydrogens are in a subshell that is much closer to the nucleus of the Nitrogen atom. This smaller radius results in a greater attraction between the electrons H+ and N share.
Bismuth (Bi) has a much larger radius, so the forces are more diluted, and the H+ is more easily removed from the Bi.
Because the Nitrogens H+ in NH3 is harder to remove it is a mild reducing agent. Bismuth has a H+ that can be removed easily so it is a stronger reducing agent.

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

9 years ago
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