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JEE Main202330 Jan 2023Evening ShiftChemistryp Block Elements (Group 13 & 14)Actual

Boric acid in solid, whereas BF 3 is gas at room temperature because of

Options

  1. AStrong ionic bond in Boric acid
  2. BStrong van der Waal's interaction in Boric acid
  3. CStrong hydrogen bond in Boric acid
  4. DStrong covalent bond in BF 3

Correct answer

C. Strong hydrogen bond in Boric acid

Step-by-step solution

Inter-molecular structure of Boric acid( H 3 BO 3 ) in solid phase: Boric acid has strong hydrogen bonding as we can see in the above figure, while BF 3 does not. Therefore boric acid is solid.

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