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IB Chemistry HL 1.3.3 Main Energy Levels Questions

Use the principal energy-level number n and 2n² to calculate the maximum number of electrons a main energy level can hold.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Calculate the maximum number of electrons in a principal energy level from its integer n value using 2n².

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Study 1.3.3—Main energy levels conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 1.3.3 Main Energy Levels Questions question 1

[Maximum number: 1]

What is the maximum number of electrons in energy level n = 4?

A

8

B

18

C

32

D

50

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