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

Electronic Structure: Number of Electrons

GOB Chemistry

2. Atoms and the Periodic Table

Electronic Structure: Number of Electrons

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Multiple Choice

An element possesses 4 energy levels. How many total electrons can it theoretically hold?

100

110

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Verified step by step guidance

Understand that each energy level can hold a specific number of electrons. The formula for the maximum number of electrons in an energy level is given by 2n^2, where n is the principal quantum number (energy level).

Calculate the maximum number of electrons for each energy level. Start with the first energy level (n=1): 2(1)^2 = 2 electrons.

Proceed to the second energy level (n=2): 2(2)^2 = 8 electrons.

Continue to the third energy level (n=3): 2(3)^2 = 18 electrons.

Finally, calculate the fourth energy level (n=4): 2(4)^2 = 32 electrons. Add the electrons from all energy levels to find the total number of electrons the element can theoretically hold.