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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

Lewis Dot Symbols (Simplified)

GOB Chemistry

2. Atoms and the Periodic Table

Lewis Dot Symbols (Simplified)

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Multiple Choice

Draw the electron-dot symbol for the following element:Rn

Lewis dot symbol for radon (Rn) with electrons represented as dots.

Lewis dot symbol for radon (Rn) showing electron arrangement.

Lewis dot symbol for radon (Rn) illustrating electron distribution.

Lewis dot symbol for radon (Rn) depicting electron placement.

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Verified step by step guidance

Identify the element Rn, which is radon, a noble gas located in Group 18 of the periodic table.

Determine the number of valence electrons for radon. As a noble gas, radon has a full outer shell, which means it has 8 valence electrons.

To draw the electron-dot symbol, represent the element symbol 'Rn' and surround it with dots representing the valence electrons.

Place one dot on each of the four sides of the element symbol before pairing them. This ensures that each side has at least one electron before any side has two.

Continue placing the remaining dots to complete the octet, ensuring that there are a total of 8 dots around the 'Rn' symbol, representing the full valence shell.