Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

2. Atoms and the Periodic Table

The Electron Configuration (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

The Electron Configuration (Simplified)

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Multiple Choice

Which electron configuration represents a violation of Hund's Rule?

Four electron configurations illustrating Hund's Rule violations with green arrows in red boxes.

Four electron configurations showing different arrangements, highlighting a violation of Hund's Rule.

Four electron configurations with green arrows, indicating a violation of Hund's Rule in one arrangement.

Four electron configurations with green arrows, one arrangement violates Hund's Rule.

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Verified step by step guidance

Understand Hund's Rule: Hund's Rule states that every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

Examine the first image: The first image shows two electrons in the first orbital with opposite spins, and the second orbital is singly occupied. This configuration does not violate Hund's Rule.

Examine the second image: The second image shows two electrons in the first orbital with opposite spins, and the second orbital is singly occupied. This configuration does not violate Hund's Rule.

Examine the third image: The third image shows two electrons in the first orbital with opposite spins, and the second orbital is singly occupied. This configuration does not violate Hund's Rule.

Examine the fourth image: The fourth image shows two electrons in the first orbital with opposite spins, and the second orbital is singly occupied. This configuration does not violate Hund's Rule.