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2.1 Atomic Structure and the Bohr Model

Lesson Summary

Atomic Structure

• Mass Number = (Protons) + (Neutrons)
• Neutrons = (Mass Number) – (Protons)

Bohr Model of the Atom

• Electrons distance from their nuclei are quantized

• The distance between each energy shell and the next shell above it gets smaller as you get further away from the nucleus.