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Contrary to other hydrogen halides, hydrogen fluoride is a liquid because

Option: 1

Size of F atom is small

Option: 2

HF is a weak acid

Option: 3

HF molecule are hydrogen bonded

Option: 4

Fluorine is highly reactive

Answers (1)


HF has strong hydrogen bonding due to the high electronegativity difference between H and F. So the force between molecules is stronger for this than in other hydrogen halides. Hence, HF is a liquid at room temperature and other hydrogen halides are gases.

Hence, the correct answer is Option (3)

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