Curated Video
Pauli's Exclusion Principle: The rule of electrons
Wolfgang Pauli's Exclusion Principle, developed in 1925, is a crucial concept in quantum mechanics. It states that two electrons in the same atom cannot have the same set of quantum numbers, which are the principal quantum number (𝑻n),...
Curated Video
Stern-Gerlach Experiment and spin quantum number : Revealing Electron Spin
The Stern-Gerlach experiment, which took place in 1922, was the most important proof that electrons have spin and that they have a spin quantum number. A stream of silver atoms was sent through an experiment using a magnetic field that...
Curated Video
What Are Valence Electrons And How To Find Them?
Valence electrons are the electrons that are located in the outermost shell of an atom. In other words, these are the electrons that can be gained or lost during a chemical reaction. In order to determine the number of valence electrons...
Professor Dave Explains
Practice Problem: Electron Configuration and Quantum Numbers
Everyone has trouble with electron configurations and quantum numbers. Well today we are going to settle the score with a little practice!
Professor Dave Explains
IIT/JEE Chemistry Practice #13: Atomic Orbitals/Quantum Numbers
Practice REAL problems from actual past IIT/JEE exams with Professor Dave!
Professor Dave Explains
Quantum Numbers, Atomic Orbitals, and Electron Configurations
Orbitals! Oh no. They're so weird. Don't worry, nobody understands these in first-year chemistry. You just pretend to, and then in second-year you learn them a little better, the following year a little better, and once you have a PhD...
Sophia Learning
Sophia: Quantum Numbers
Learn about quantum numbers, their symbols, and what they stand for in regards to a Charge Cloud model. [6:48]
