Answer: Highly electronegative atom with lone pair (F, O, N).
- A Highly electronegative atom with lone pair (F, O, N)
- B A carbon atom in a saturated hydrocarbon chain
- C Any non-metal element regardless of electronegativity
- D An atom from the noble gas family
Correct answer: A. Highly electronegative atom with lone pair (F, O, N)
Explanation: Hydrogen bonding requires H to be attached to a highly electronegative atom (F, O, or N) that has lone pairs.
VSEPR theory predicts molecular shape from the number of bonding and lone electron pairs around the central atom.
Concept context
Understand how atoms join to form molecules. Covers ionic and covalent bonding, VSEPR theory, hybridization (sp, sp², sp³), molecular orbital theory, bond polarity, and intermolecular forces like hydrogen bonding.
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