Glossary 1.1


The glossary provides definitions and explanations of key terms and concepts essential to understand the topic in the lesson. Be sure to familiarize yourself with each term before attempting the lesson glossary quiz.

Browse the glossary using this index

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P

Pauli Exclusion Principle

the principle that no two electrons in the same atom can be in the same quantum state


Photoelectric Effect

electrons are emitted by matter that absorbs energy from shortwave electromagnetic radiation (for example, visible or UV light)


Photon

a unit of light energy


Principal Quantum Number (n)

the quantum number that describes the size and energy of an atomic model


Proton

a positively charged subatomic particle