Question

22. In which of the following substances the intermolecular
forces are hydrogen bonds?
(a) Hydrogen chloride b) Hydrogen sulphide
(c) Dry ice (d) ice​

Answer 1

b) Hydrogen sulphide

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Answer 2

(d) Ice​ has intermolecular forces are hydrogen bonds.

Hydrogen bonding:

• A hydrogen atom sandwiched between two other atoms with a high affinity for electrons produces a connection known as hydrogen bonding that is stronger than van der Waals forces but weaker than ionic or covalent bonds.
• A hydrogen bond is an attraction between a hydrogen atom that is covalently bound to a more electronegative "donor" atom or group and an electronegative atom carrying a single pair of electrons, known as the hydrogen bond acceptor.
• Any molecule in which a hydrogen atom is directly bonded to an oxygen or nitrogen atom can form a hydrogen bond.
• Hydrogen bonds can still exist when hydrogen is bonded to fluorine, despite the HF group not being present in other molecules.

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