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JEE Main 201910 JanuaryEvening Shift
Exam
JEE Main
Year
2019
Date
10 January
Shift
Evening Shift
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2019 · 10 January · Evening Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

The pair that contains two P - H bonds in each of the oxoacids is:

The pair that contains two P−HP - H bonds in each of the oxoacids is:The pair that contains two P - H bonds in each of the oxoacids is:The pair that contains two P - H bonds in each of the oxoacids is:

Options

  1. AH3PO3{H}_{3}{PO}_{3} and H3PO2{H}_{3}{PO}_{2}
  2. BH4P2O5{H}_{4}{P}_{2}{O}_{5} and H3PO3{H}_{3}{PO}_{3}
  3. CH4P2O5{H}_{4}{P}_{2}{O}_{5} and H4P2O6{H}_{4}{P}_{2}{O}_{6}
  4. DH3PO2{H}_{3}{PO}_{2} and H4P2O5{H}_{4}{P}_{2}{O}_{5}

Correct answer

D. H3PO2{H}_{3}{PO}_{2} and H4P2O5{H}_{4}{P}_{2}{O}_{5}

Step-by-step solution

First form structures of all the oxy acids of phophorous.

Then identify the bond of P−HP - H:

The pair that contains two P - H bonds in each of the oxoacids is:

The pair that contains two P - H bonds in each of the oxoacids is:

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