Table of contents

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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

Which element has chemical properties most similar to sodium?

Calcium

Magnesium

Aluminum

Potassium

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Verified step by step guidance

Identify the position of sodium (Na) in the periodic table. Sodium is in Group 1 (alkali metals) and Period 3.

Recall that elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons.

Look for the element among the options that is in the same group as sodium. Potassium (K) is in Group 1, just below sodium in Period 4.

Understand that calcium (Ca) and magnesium (Mg) are in Group 2 (alkaline earth metals), and aluminum (Al) is in Group 13, so their chemical properties differ from sodium's.

Conclude that potassium, being in the same group as sodium, has chemical properties most similar to sodium due to having the same number of valence electrons.