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

3. Ionic Compounds

Periodic Trend: Ionization Energy (Simplified)

GOB Chemistry

3. Ionic Compounds

Periodic Trend: Ionization Energy (Simplified)

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Multiple Choice

Rank the following elements in order of increasing ionization energy:Br, F, Ga, K and Se.

Ga < K < Br < Se < F

Ga < Br < K < Se < F

K < Se < Ga < Br < F

K < Ga < Se < Br < F

K < Ga < Se < F < Br

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Verified step by step guidance

Understand the concept of ionization energy: Ionization energy is the energy required to remove an electron from an atom in the gaseous state. Generally, ionization energy increases across a period and decreases down a group in the periodic table.

Identify the position of each element in the periodic table: Br (Bromine), F (Fluorine), Ga (Gallium), K (Potassium), and Se (Selenium). Fluorine and Bromine are halogens, Gallium is a post-transition metal, Potassium is an alkali metal, and Selenium is a non-metal.

Consider the periodic trends: As you move from left to right across a period, ionization energy increases. As you move down a group, ionization energy decreases. Therefore, elements further to the right and higher up in the periodic table generally have higher ionization energies.

Apply the trends to the given elements: Potassium (K) is in Group 1 and has the lowest ionization energy. Gallium (Ga) is further right than Potassium but lower than Selenium (Se), Bromine (Br), and Fluorine (F). Fluorine, being the furthest right and highest up, has the highest ionization energy.

Rank the elements based on the trends: Start with the element with the lowest ionization energy (K), followed by Ga, Se, Br, and finally F, which has the highest ionization energy.