When is the Intramolecular hydrogen bond formed?

  1. When a hydrogen atom is in between the two highly electropositive atoms
  2. When Oxygen atom is in between the two highly electronegative atoms
  3. When a hydrogen atom is in between the two highly electronegative atoms
  4. When Oxygen atom is in between the two highly electropositive atoms

Answer (Detailed Solution Below)

Option 3 : When a hydrogen atom is in between the two highly electronegative atoms
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SSC Steno 2022 Official Paper (Held On: 17 Nov 2022 Shift 1)
200 Qs. 200 Marks 120 Mins

Detailed Solution

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Option 3 is correct, i.e. When a hydrogen atom is in between the two highly electronegative atoms.

  • There are two types of H bond and they are as follows:
    • Intramolecular hydrogen bond.
    • Intermolecular hydrogen bond.
  • Intramolecular hydrogen bond:
    • It is formed when a hydrogen atom is in between the two highly electronegative (F, O, N) atoms present within the same molecule. For example, in o-nitrophenol, the hydrogen is in between the two oxygen atoms.
  • Intermolecular hydrogen bond:
    • It is formed between two different molecules of the same or different compounds. For example, H-bond in case of HF molecule, alcohol or water molecules, etc.

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