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

4. Molecular Compounds

Dipole Moment (Simplified)

GOB Chemistry

4. Molecular Compounds

Dipole Moment (Simplified)

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Multiple Choice

Arrange the following elements in order of decreasing electronegativity: P, Na, N, Al

P > Na > N > Al

b) N > P > Na > Al

Na > Al > P > N

N > P > Al > Na

P > N > Na > Al

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Verified step by step guidance

Understand the concept of electronegativity: Electronegativity is a measure of an atom's ability to attract and hold onto electrons. It generally increases across a period from left to right and decreases down a group in the periodic table.

Identify the position of each element in the periodic table: Phosphorus (P), Sodium (Na), Nitrogen (N), and Aluminum (Al) are located in different groups and periods. Nitrogen is in Group 15, Period 2; Phosphorus is in Group 15, Period 3; Sodium is in Group 1, Period 3; and Aluminum is in Group 13, Period 3.

Compare electronegativity values: Nitrogen, being in the second period and further to the right, has a higher electronegativity than Phosphorus. Sodium, being in Group 1, has a lower electronegativity compared to Aluminum, which is in Group 13.

Arrange the elements based on their electronegativity values: Start with the element with the highest electronegativity and proceed to the lowest. Nitrogen has the highest electronegativity, followed by Phosphorus, then Aluminum, and finally Sodium.

Select the correct option: Based on the arrangement of electronegativity values, the correct order is N > P > Al > Na.