QuestionJuly 1, 2025

Which of the following molecules is NOT capable of hydrogen bonding? Ammonia (NH3) Water (H2O) Hydrogen fluoride (HF) Methane (CH4)

Which of the following molecules is NOT capable of hydrogen bonding? Ammonia (NH3) Water (H2O) Hydrogen fluoride (HF) Methane (CH4)
Which of the following molecules is NOT capable of hydrogen bonding?
Ammonia (NH3)
Water (H2O)
Hydrogen fluoride (HF)
Methane (CH4)

Solution
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Answer

Methane (CH_4) Explanation 1. Identify Hydrogen Bonding Criteria A molecule can form hydrogen bonds if it has a hydrogen atom attached to a highly electronegative atom (N, O, or F). 2. Analyze Each Molecule - Ammonia (NH_3): Has N-H bonds, capable of hydrogen bonding. - Water (H_2O): Has O-H bonds, capable of hydrogen bonding. - Hydrogen fluoride (HF): Has H-F bond, capable of hydrogen bonding. - Methane (CH_4): Has C-H bonds, carbon is not highly electronegative.

Explanation

1. Identify Hydrogen Bonding Criteria<br /> A molecule can form hydrogen bonds if it has a hydrogen atom attached to a highly electronegative atom (N, O, or F).<br /><br />2. Analyze Each Molecule<br /> - Ammonia $(NH_3)$: Has N-H bonds, capable of hydrogen bonding.<br /> - Water $(H_2O)$: Has O-H bonds, capable of hydrogen bonding.<br /> - Hydrogen fluoride $(HF)$: Has H-F bond, capable of hydrogen bonding.<br /> - Methane $(CH_4)$: Has C-H bonds, carbon is not highly electronegative.
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