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The maximum number of reducing hydrogens...

The maximum number of reducing hydrogens are contained in which of the following molecule/s ?

A

`H_(3)PO_(2)`

B

`H_(3)PO_(3)`

C

`H_(3)PO_(4)`

D

`H_(4)P_2O_(7)`

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(3)PO_(2) to H-overset(O)overset(uarr)underset(H)underset(|)(P)-OH`
`H_(3)PO_3 to H-overset(O)overset(uarr)underset(OH)underset(|)(P)-OH`
`H_(3)PO_(4) to HO-overset(O)overset(uarr)underset(OH)underset(|)(P)-OH`
`H_(4)P_(2)O_(7) to HO-overset(O)overset(uarr)underset(OH)underset(|)(P)-O-overset(O)overset(uarr)underset(OH)underset(|)(P)-OH`
Maximum number of P-H bonds are is present in `H_(3)PO_(2)`
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