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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: Group Names

General Chemistry

2. Atoms & Elements

Periodic Table: Group Names

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Multiple Choice

How many elements belong to the halogen family on the periodic table, and which of the following lists correctly identifies their chemical symbols?

4 elements: F, Cl, Br, I

6 elements: F, Cl, Br, I, At, Ts

5 elements: F, Cl, Br, I, At

5 elements: H, He, Li, Be, B

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Verified step by step guidance

Recall that the halogen family is Group 17 (or Group VIIA) on the periodic table, which consists of nonmetal elements known for their high reactivity and seven valence electrons.

Identify the elements in Group 17 by their chemical symbols: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At), and Tennessine (Ts).

Note that Tennessine (Ts) is a recently discovered element and is often considered a halogen based on its position, but it is a synthetic element with limited chemical data.

Count the number of naturally recognized halogen elements: F, Cl, Br, I, and At, which totals 5 elements.

Compare the given lists to the known halogen elements and confirm that the list with 5 elements: F, Cl, Br, I, At correctly identifies the halogen family members.