Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

2. Atoms & Elements

Periodic Table: Representative Elements & Transition Metals

General Chemistry

2. Atoms & Elements

Periodic Table: Representative Elements & Transition Metals

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Multiple Choice

State the element symbol found in the 6th Period and Group 7A.

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Verified step by step guidance

Identify the periodic table structure: The periodic table is organized into periods (horizontal rows) and groups (vertical columns). Periods are numbered from 1 to 7, and groups are numbered from 1 to 18, with Group 7A also known as Group 17 in the modern IUPAC system.

Locate the 6th period: The 6th period is the second-to-last row of the periodic table, containing elements with atomic numbers from 55 (Cesium, Cs) to 86 (Radon, Rn).

Identify Group 7A (or Group 17): This group is known as the halogens, which includes elements like Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).

Find the intersection of the 6th period and Group 7A: In the 6th period, the element in Group 7A is Astatine (At).

Verify the element symbol: Ensure that the element symbol 'At' corresponds to Astatine, which is indeed the element found in the 6th period and Group 7A.

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