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

Previous problemNext problem

Struggling with General Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

After drawing the Lewis structure of H2CS (thioformaldehyde), what are the electron domain geometry and molecular geometry around the central carbon atom?

Electron domain geometry: trigonal planar; Molecular geometry: trigonal planar

Electron domain geometry: tetrahedral; Molecular geometry: tetrahedral

Electron domain geometry: trigonal planar; Molecular geometry: bent

Electron domain geometry: linear; Molecular geometry: linear

Previous problemNext problem

Verified step by step guidance

Step 1: Draw the Lewis structure of H2CS. Place carbon (C) as the central atom, connect it to two hydrogen (H) atoms and one sulfur (S) atom. Count the total valence electrons: C has 4, each H has 1, and S has 6, for a total of 4 + 2(1) + 6 = 12 electrons.

Step 2: Arrange the electrons to satisfy the octet rule for carbon and sulfur. Carbon forms two single bonds with hydrogen atoms and a double bond with sulfur to complete its octet. This results in three regions of electron density (two C-H single bonds and one C=S double bond) around the carbon atom.

Step 3: Determine the electron domain geometry by considering all regions of electron density (bonding and lone pairs) around the central atom. Since there are three regions of electron density and no lone pairs on carbon, the electron domain geometry is trigonal planar.

Step 4: Determine the molecular geometry by considering only the positions of atoms (ignoring lone pairs on the central atom). Because there are no lone pairs on carbon and three bonded atoms, the molecular geometry is also trigonal planar.

Step 5: Conclude that both the electron domain geometry and molecular geometry around the central carbon atom in H2CS are trigonal planar.