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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

General Chemistry

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

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Multiple Choice

Which of the following statements correctly describes the Lewis dot structure of ethanol (C2H5OH)?

The oxygen atom is bonded to two carbon atoms and has no lone pairs of electrons.

The oxygen atom is bonded to one hydrogen atom and one carbon atom, and has two lone pairs of electrons.

Each carbon atom in ethanol has three lone pairs of electrons.

The hydrogen atoms are directly bonded to the oxygen atom only, with no hydrogens bonded to carbon.

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Verified step by step guidance

Recall that the Lewis dot structure represents atoms, their valence electrons, bonds between atoms, and lone pairs of electrons.

Identify the molecular formula of ethanol: C2H5OH, which means there are two carbon atoms, six hydrogen atoms, and one oxygen atom.

Understand the bonding: In ethanol, one oxygen atom is bonded to one carbon atom and one hydrogen atom, not two carbons or multiple hydrogens bonded to oxygen.

Recognize that oxygen typically has two lone pairs of electrons in its Lewis structure, which are non-bonding pairs that complete its octet.

Note that carbon atoms form four bonds each (either with hydrogen or carbon), and do not have lone pairs; hydrogen atoms form only one bond each, usually to carbon or oxygen.