MCQ
Strong reducing behaviour of $H_3PO_2$ is due to
- Alow co-ordination number of phosphorus
- Bhigh oxidation state of phosphorus
- Cpresence of two $-OH$ groups and one $P-H$ bond
- ✓presence of one $-OH$ group and two $P-H$ bonds.
All oxy-acid of phosphorus which contain $\mathrm{P}-\mathrm{H}$ bond act as reductant.
presence of one -OH group and two $P-H$ bonds
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$(I)\,[Ni(CO)_4]$ $(II)\, [Mn(CN)_6]^{4-}$ $(III)\, [Cr(NH_3)_6]^{3+}$ $(IV) \,[CoF_6]^{3 -}$
$(I)$ $1\, M$ glucose $(aq.)$
$(II)$ $1\, M$ sodium chloride $(aq.)$
$(III)$ $1\, M$ acetic acid in benzene
$(IV)$ $1\, M$ ammonium phosphate $(aq.)$