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JEE Main201910 Jan 2019Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

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

Options

  1. AH 3 PO 3 and H 3 PO 2
  2. BH 4 P 2 O 5 and H 3 PO 3
  3. CH 4 P 2 O 5 and H 4 P 2 O 6
  4. DH 3 PO 2 and H 4 P 2 O 5

Correct answer

D. H 3 PO 2 and 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 - H :

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