In chemistry and atomic physics, an electron shell may be thought of as an orbit followed by electrons around an atom's nucleus. The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on farther and farther from the nucleus. The shells correspond to the principal quantum numbers (n = 1, 2, 3, 4 ...) or are labeled alphabetically with the letters used in X-ray notation (K, L, M, ...). A useful guide when understanding electron shells in atoms is to note that each row on the conventional periodic table of elements represents an electron shell. Each shell can contain only a fixed number of electrons: the first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons. For an explanation of why electrons exist in these shells, see electron configuration. Each shell consists of one or more subshells, and each subshell consists of one or more atomic orbitals. (Wikipedia).
The Nuclear Shell Model: An Introduction
A basic introduction to the shell model to explain magic numbers in nuclei.
From playlist Nuclear Physics
Chemistry 1B Professor Eric Potma Department of Chemistry University of California, Irvine
From playlist Chem 1P: Studio Version
The Atom B1 The Quantum Mechanical Picture of the Atom
The quantum mechanical model of the atom.
From playlist Physics - The Atom
The Atom B2 The Quantum Mechanical Picture of the Atom
The quantum mechanical model of the atom.
From playlist Physics - The Atom
Atomic Physics 1: Quantum Numbers
Video 1 on Atomic Physics which sets out the four quantum numbers, the Pauli Exclusion Principle, the order of filling electron shells and the ordering of elements in the Periodic Table.
From playlist Atomic Physics
Chemistry - Electron Structures in Atoms (17 of 40) The Electron and the Wave Eq: Part 1
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the electron and develops the wave equation for the motion of the electron.
From playlist CHEMISTRY 11 ELECTRON ORBITALS AND ATOMIC STRUCTURE
The Atom B3 The Quantum Mechanical Picture of the Atom
The quantum mechanical model of the atom.
From playlist Physics - The Atom
The Atom A3 The Bohr Model of the Hydrogen Atom
The Bohr model of the atom.
From playlist Physics - The Atom
A Level Chemistry Revision "Atomic Orbitals"
In this video, we start by taking a close look at electron shells and what is meant by the principal quantum number. We then explore the idea of atomic orbitals and subshells. This video is aimed at the UK A Level Chemistry specifications. Students studying International A Level Chemistry
From playlist A Level Chemistry Atomic Structure
Looking at valence electrons to figure out reactivity More free lessons at: http://www.khanacademy.org/video?v=1TZA171yxY4
From playlist Chemistry
Electron Configuration of First 20 Elements | Properties of Matter | Chemistry | FuseSchool
Electron Configuration of First 20 Elements | Properties of Matter | Chemistry | FuseSchool This lesson looks at the electronic configurations of elements in the periodic tables. Electrons are arranged in energy levels or shells around the nucleus of an atom. As we increase the atomic n
From playlist CHEMISTRY
Mod-03 Lec-25 Core Shell Nanostructures - II
Nano structured materials-synthesis, properties, self assembly and applications by Prof. A.K. Ganguli,Department of Nanotechnology,IIT Delhi.For more details on NPTEL visit http://nptel.ac.in
Physics - Modern Physics (24 of 26) Orbital Quantum Numbers I
Visit http://ilectureonline.com for more math and science lectures! In this video (Part 1 of 3) I will explain the orbital quantum numbers.
From playlist MODERN PHYSICS 2: ATOMIC AND NUCLEAR PHYSICS, PARTICLE PHYSICS
Electron Arrangement in Shells.
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From playlist AQA Chemistry Paper 1 | Revision Playlist for Combined and Separate Science GCSE
COVALENT BONDING - All You Need To Know! | GCSE & IGCSE Chemistry
Science with Hazel's Perfect Answer Revision Guides are available at www.sciencewithhazel.co.uk I've updated my covalent bonding GCSE & IGCSE chemistry video to include the following: - How covalent bonds form between non-metals - How to draw dot cross diagrams for covalent bonds - How to
From playlist GCSE & IGCSE Chemistry Revision //
A description of the three primary bonding types.
From playlist Atomic Structures and Bonding
Chemistry - Electron Structures in Atoms (4 of 40) Atomic Spectra
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the atomic spectra and how electrons "jump" from one energy level to another.
From playlist CHEMISTRY 11 ELECTRON ORBITALS AND ATOMIC STRUCTURE
Electron Configuration Diagrams | Properties of Matter | Chemistry | FuseSchool
Electron Configuration Diagrams | Properties of Matter | Chemistry | FuseSchool Learn the basics about Drawing electron configuration diagrams. Find out more in this video! JOIN US ON PATREON https://www.patreon.com/fuseschool SUBSCRIBE to the FuseSchool YouTube channel for many more
From playlist CHEMISTRY