JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

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Analyzing +4 | -1

Consider the following statements

(i)

H_3{PO}_2

is called phosphinic acid
(ii) Pyrophosphorous acid contains two

P-H

bonds
(iii) Oxidation state of phosphorous in
hypophosphoric acid is +5
The correct statements are

View answer and explanation

Correct option: A

(i) and (ii) only

Option A ((i) and (ii) only) is correct because

H_3PO_2

is phosphinic acid and pyrophosphorous acid (

H_4P_2O_5

) contains two P-H bonds, while hypophosphoric acid (

H_4P_2O_6

) has an oxidation state of +4 for phosphorus.

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