pBlock ElementsII 1 Question 7
7. Good reducing nature of $\mathrm{H} _{3} \mathrm{PO} _{2}$ is attributed to the presence of
(2019 Main, 9 Jan II)
(a) two $\mathrm{P}-\mathrm{H}$ bonds
(b) one $\mathrm{P}-\mathrm{H}$ bond
(c) two $\mathrm{P}-\mathrm{OH}$ bonds
(d) one $\mathrm{P}-\mathrm{OH}$ bond
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Answer:
Correct Answer: 7. (a)
Solution:
The structure of $\mathrm{H} _{3} \mathrm{PO} _{2}$ (hypophosphorous) acid is
Due to the presence of two $\mathrm{P}-\mathrm{H}$ bonds, $\mathrm{H} _{3} \mathrm{PO} _{2}$ acts a strong reducing agent. e.g.
BETA
