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  4. The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is:

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Q. The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is:

AIEEEAIEEE 2005The p-Block Elements - Part2

Solution:

Hypophosphorus acid $(H_3PO_2)$ is a monobasic acid and has only one ionisable H, two H-atoms are direcdy attached to phosphorus. Thus the correct statement is (c).

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