Question:

$H_{3}PO_{3}$ is:

Updated On: Jul 27, 2022
  • A dibasic acid
  • A tribasic acid
  • monobasic
  • neutral
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The Correct Option is A

Solution and Explanation

The structure of phosphorous acid $\left( H _{3} PO _{3}\right)$ is as follows :
As it has $2-O H$ groups, hence it shows dibasic character.
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Notes on Group 15 Elements

Concepts Used:

Group 15 Elements

Group 15 elements are also known as nitrogen group elements or nitrogen family. 

It consists of:

  • Nitrogen (N)
  • Phosphorus (P)
  • Arsenic (As)
  • Antimony (Sb)
  • Bismuth (Bi)
  • Moscovium (Mc)

They are present on the right side of the periodic table. All the elements are arranged based on their atomic weight. The elements with similar properties reside in a column called the group.

All Group 15 elements have the electron configuration ns2np3 in their outer shell, where n is the principal quantum number.

Periodic Trends in Group 15 Elements