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: Group Names

General Chemistry

2. Atoms & Elements

Periodic Table: Group Names

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Multiple Choice

Which term refers to a set of elements in the periodic table that all have the same number of energy levels (principal shells) in their electron cloud?

Block

Family

Group

Period

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Verified step by step guidance

Understand that the periodic table is organized based on the electron configuration of elements, which includes the number of energy levels (principal shells) their electrons occupy.

Recall that the term 'Period' in the periodic table refers to a horizontal row of elements, where all elements in the same period have the same number of principal energy levels (shells).

Recognize that 'Group' or 'Family' refers to vertical columns where elements share similar chemical properties and the same number of valence electrons, but not necessarily the same number of energy levels.

Note that 'Block' refers to the type of atomic orbital (s, p, d, f) that is being filled with electrons, which is different from the number of energy levels.

Therefore, the correct term for elements with the same number of energy levels is 'Period', as it directly corresponds to the principal quantum number of the outermost electrons.