Table of contents

1. The Chemical World9m
- The Scientific Method
  9m
2. Measurement and Problem Solving2h 19m
3. Matter and Energy2h 15m
4. Atoms and Elements2h 33m
5. Molecules and Compounds1h 50m
6. Chemical Composition1h 23m
7. Chemical Reactions1h 43m
8. Quantities in Chemical Reactions1h 8m
9. Electrons in Atoms and the Periodic Table2h 32m
10. Chemical Bonding2h 10m
11 Gases2h 7m
12. Liquids, Solids, and Intermolecular Forces1h 11m
13. Solutions3h 1m
14. Acids and Bases2h 14m
15. Chemical Equilibrium1h 27m
16. Oxidation and Reduction1h 33m
17. Radioactivity and Nuclear Chemistry53m

9. Electrons in Atoms and the Periodic Table

Electronic Structure: Number of Electrons

Introduction to Chemistry

9. Electrons in Atoms and the Periodic Table

Electronic Structure: Number of Electrons

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Multiple Choice

An element possesses 4 energy levels. How many total electrons can it theoretically hold?

100

110

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Verified step by step guidance

Understand that each energy level (or shell) can hold a specific maximum number of electrons. The formula to determine the maximum number of electrons in a shell is 2n^2, where n is the principal quantum number (energy level).

Calculate the maximum number of electrons for the first energy level (n=1) using the formula: 2(1)^2 = 2 electrons.

Calculate the maximum number of electrons for the second energy level (n=2) using the formula: 2(2)^2 = 8 electrons.

Calculate the maximum number of electrons for the third energy level (n=3) using the formula: 2(3)^2 = 18 electrons.

Calculate the maximum number of electrons for the fourth energy level (n=4) using the formula: 2(4)^2 = 32 electrons. Then, sum the electrons from all energy levels to find the total number of electrons the element can theoretically hold.