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

Bohr Model (Simplified)

Introduction to Chemistry

9. Electrons in Atoms and the Periodic Table

Bohr Model (Simplified)

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Multiple Choice

Which of the electron transitions represents an example of emission?

n = 2 to n = 4

n = 3 to n = 6

n = 3 to n = 1

n = 4 to n = 7

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Verified step by step guidance

Understand the concept of electron transitions: Electrons in an atom can move between energy levels. When an electron moves from a higher energy level to a lower energy level, it emits energy in the form of light. This process is called emission.

Identify the given transitions: The problem provides several electron transitions between different energy levels (n = 2 to n = 4, n = 3 to n = 6, n = 3 to n = 1, and n = 4 to n = 7).

Determine the direction of each transition: For emission, the transition must be from a higher energy level to a lower energy level. Analyze each transition to see if it meets this criterion.

Analyze the transition n = 3 to n = 1: This transition involves an electron moving from a higher energy level (n = 3) to a lower energy level (n = 1), which is characteristic of emission.

Conclude that the transition n = 3 to n = 1 is an example of emission, as it involves the release of energy when the electron moves to a lower energy level.