Nuclide Symbols: Atomic Number, Mass Number, Ions, and Isotopes
4:18
Balancing Chemical Equations
8:42
Quantum Numbers, Atomic Orbitals, and Electron Configurations
18:25
A Pergunta do SAT que Todos Erraram
6:38
Atomic number, Atomic mass, Mass number: What's the difference?
12:42
What are Isotopes?
3:56
Wave-Particle Duality and the Photoelectric Effect
31:33
O Mais Antigo Problema Não Resolvido da Matemática
13:37