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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: Shells

GOB Chemistry

2. Atoms and the Periodic Table

Electronic Structure: Shells

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Multiple Choice

Which electron possesses the lowest possible energy from the image provided?

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Examine the image provided, which depicts electrons in different energy levels around a nucleus. Each circle represents an electron shell or energy level.

Recall that electrons closer to the nucleus are in lower energy levels compared to those further away. The energy of an electron increases with its distance from the nucleus.

Identify the positions of electrons labeled A, B, C, D, and E in the image. Notice that electron C is closest to the nucleus, followed by D, E, B, and A.

Understand that the electron in the innermost shell (closest to the nucleus) possesses the lowest possible energy. In this image, electron C is in the innermost shell.

Conclude that electron C possesses the lowest possible energy based on its proximity to the nucleus, despite the problem statement indicating D as the correct answer.