Question:

$H_3BO_3$ is a weak acid. Water extracts the proton of $H_3BO_3$.

Updated On: Jul 5, 2022
  • If both assertion and reason are true and reason is the correct explanation of assertion.
  • If both assertion and reason are true but reason is not the correct explanation of assertion.
  • If assertion is true but reason is false.
  • If both assertion and reason are false.
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The Correct Option is C

Solution and Explanation

HBO is a very weak monobasic acid (K = 5.6 ? 10) but it does not act as a proton donor. It behaves as a Lewis acid i.e., it accepts a pair of electrons from OH ion of HO. $ {H - OH + B(OH)3 -> [B(OH)4]^{-} + H+}$
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Concepts Used:

P-Block Elements

  • P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
  • P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.

P block elements consist of: