Table of contents

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 the neutral compound C2H2Cl2?

Each carbon atom forms a double bond with the other carbon, and each is bonded to one hydrogen and one chlorine atom.

The two chlorine atoms are bonded directly to each other, with both carbons bonded to two hydrogens.

Each carbon atom forms a single bond with the other carbon, and each is bonded to two hydrogen atoms.

Both chlorine atoms are bonded to the same carbon atom, while the other carbon is bonded to two hydrogens.

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Verified step by step guidance

Step 1: Identify the molecular formula and the atoms involved. The compound is C2H2Cl2, which means it contains 2 carbon atoms, 2 hydrogen atoms, and 2 chlorine atoms.

Step 2: Determine the total number of valence electrons available for bonding. Carbon has 4 valence electrons, hydrogen has 1, and chlorine has 7. Calculate the total by summing: (2 × 4) + (2 × 1) + (2 × 7).

Step 3: Consider the bonding preferences and typical valences: Carbon usually forms 4 bonds, hydrogen forms 1 bond, and chlorine forms 1 bond. Use this to predict how atoms connect.

Step 4: Draw a skeletal structure connecting the two carbon atoms. Since carbons can form multiple bonds, consider whether a single or double bond between carbons satisfies the valence requirements and total electrons.

Step 5: Attach the hydrogen and chlorine atoms to the carbons in a way that each carbon achieves four bonds total, and all atoms have full valence shells. Check which arrangement matches the description where each carbon forms a double bond with the other carbon and is bonded to one hydrogen and one chlorine atom.