https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atomic-models-and-periodicity/x2613d8165d88df5e:the-quantum-model/a/the-periodic-table-electron-shells-and-orbitals-article 2024-02-03T14:54:13.458936091Z The periodic table, electron shells, and orbitals article https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/orbitals-and-electrons/v/quantum-numbers 2022-11-16T04:22:43.7414897Z Quantum numbers An orbital is a region around an atom's nucleus where electrons are likely to be found. Different types of orbitals (s, p, d, f) have different shapes and can hold different numbers of electrons. Learn how quantum numbers are used to describe the orbitals, and compare Bohr model orbits with the quantum mechanical model of atom. Jay video https://cdn.kastatic.org/googleusercontent/_QaEq1U87HVAKgVIwruvdrmoI_aaqRSHFy01cZkC-upvvE3wBb4cvnVv61_WLPwKqCOyjI1OhPnE2NIAjeW3vobv Quantum numbers An orbital is a region around an atom's nucleus where electrons are likely to be found. Different types of orbitals (s, p, d, f) have different shapes and can hold different numbers of electrons. Learn how quantum numbers are used to describe the orbitals, and compare Bohr model orbits with the quantum mechanical model of atom. https://cdn.kastatic.org/ka-youtube-converted/KrXE_SzRoqw.mp4/KrXE_SzRoqw.mp4 720 Atomic orbitals https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/orbitals-and-electrons/v/quantum-numbers-for-the-first-four-shells 2021-01-04T18:35:18Z Quantum numbers for the first four shells Calculates number of orbitals and number of electrons in different kinds of orbitals for n = 1 to 4. Explains that only two electrons are allowed per orbital, and gives shortcuts for calculating number of orbitals and total number of electrons for a given n. Jay video https://cdn.kastatic.org/googleusercontent/xBX5TKTil3UEDvbjo9zhR6nY3nKhIvzb9cHbSWyU2js9B-LTmU4DLfxs4BovVvpJpzelIoOrPGzayhIrNDLPrBV- Quantum numbers for the first four shells Calculates number of orbitals and number of electrons in different kinds of orbitals for n = 1 to 4. Explains that only two electrons are allowed per orbital, and gives shortcuts for calculating number of orbitals and total number of electrons for a given n. https://cdn.kastatic.org/ka-youtube-converted/qLU0X154wlE.mp4/qLU0X154wlE.mp4 757 Atomic orbitals https://www.khanacademy.org/science/strengthened-shs-chemistry-1/x174677b2bfa4bea2:1st-quarter/x174677b2bfa4bea2:atomic-orbitals/v/quantum-numbers-worked-problem 2024-02-20T12:58:28.858579336Z Quantum numbers - Worked problem Practice this concept - https://www.khanacademy.org/science/up-class-11-chemistry/xa8e73391a9c6d31a:structure-of-atom/xa8e73391a9c6d31a:quantum-mechanical-model-of-atom/e/electronic-configuration-of-atoms?lang=en Check out more videos and exercises on “Structure of atom” - https://www.khanacademy.org/science/up-class-11-chemistry/xa8e73391a9c6d31a:structure-of-atom?lang=en Revathi Ramachandran video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Quantum numbers - Worked problem Practice this concept - https://www.khanacademy.org/science/up-class-11-chemistry/xa8e73391a9c6d31a:structure-of-atom/xa8e73391a9c6d31a:quantum-mechanical-model-of-atom/e/electronic-configuration-of-atoms?lang=en Check out more videos and exercises on “Structure of atom” - https://www.khanacademy.org/science/up-class-11-chemistry/xa8e73391a9c6d31a:structure-of-atom?lang=en https://cdn.kastatic.org/ka-youtube-converted/1bwM8twZqlM.mp4/1bwM8twZqlM.mp4 365 Atomic orbitals https://www.khanacademy.org/science/ap-physics-2/x0e2f5a2c:magnetism-and-electromagnetism/x0e2f5a2c:magnetic-properties-materials/v/paramagnetism-diamagnetism 2021-05-17T09:53:56Z Paramagnetism & diamagnetism Most materials are either weakly attracted (paramagnets) or weakly repelled (diamagnets) by magnets. Diamagnetism is an inherent property of all materials, and it arises from Lenz's laws. Paramagnetism is seen in materials whose atoms have at least one unpaired electron. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Paramagnetism & diamagnetism Most materials are either weakly attracted (paramagnets) or weakly repelled (diamagnets) by magnets. Diamagnetism is an inherent property of all materials, and it arises from Lenz's laws. Paramagnetism is seen in materials whose atoms have at least one unpaired electron. https://cdn.kastatic.org/ka-youtube-converted/wK7Jr1g4_ws.mp4/wK7Jr1g4_ws.mp4 771 Atomic orbitals https://www.khanacademy.org/science/chemistry/atomic-structure-and-properties/electron-configurations-jay-sal/v/paramagnetism-and-diamagnetism 2021-06-01T06:56:22Z Paramagnetism and diamagnetism Jay video https://cdn.kastatic.org/googleusercontent/B5HAUiUq7Fay5I0HaEwcyAGiVdXRMimZX2zwzPoDbPeQ6PvmlZXLAXHWyUxa4uHsxB-lrH_tEBtB1gJpSwC6Qro Paramagnetism and diamagnetism https://cdn.kastatic.org/ka-youtube-converted/-lIc5z3XjXQ.mp4/-lIc5z3XjXQ.mp4 485 Atomic orbitals