Question

Hydrogen bonding possible in following molecule *
Water
Hydrofluoric acid
both above option A and B
Hydrogen cyanide​

Answer 1

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A molecule is capable of hydrogen bonding when a hydrogen atom is attached to a nitrogen, oxygen, or fluorine atom in the molecule. The hydrogen atoms are bound only to the carbon, and thus cannot form hydrogen bonds. Hydrofluoric acid, ethanol, and ammonia are all capable of hydrogen bonding.

Answer 2

Answer:

A molecule is capable of Hydrogen bonding when a hydrogen atom is attracted to a nitrogen, Oxygen, or fluorine atom in the molecule. The hydrogen atoms are found only to the carbonb , and thus cannot form hydrogen bonds.

Hydrofluoric acid, ethanol, and ammonia are all capable of hydrogen bonding.