Structure of Atom Video Lectures
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About Structure of Atom Video Lectures
Sub course of In-depth CBSE Plus ISEET Advance & IIT JEE/AIEEE test preparation. This course reviews shells, sub-shells and orbitals followed by a detailed handling of Quantum numbers. The course helps develop intuition about electron velocity and energy variance with respect to quantum numbers; The course also introduces concepts like Pauli exclusion principle and Heisenberg Uncertainty principle and finally the Schrodinger wave equation (as a physical concept of standing waves)
| Included in Structure of Atom video lectures | Description |
|---|---|
| Quantum Numbers Part 1 |
Revision of shell, sub-shells and orbitals; Introduction to principal, azimuthal and magnetic quantum numbers; Energy as a function of principal and azimuthal quantum numbers; Concept that number of sub-shells in a shell is equal to the principal quantum number;
Demo video lecture Click to play |
| Quantum Numbers Part 2 |
Concept that azimuthal quantum number tell the shape of the orbital; Dependency of orbital angular momentum on azimuthal quantum number (l); Duality of electron motion around the nucleus; Discussion on magnetic quantum number, example of px py and pz orbitals in the p-subshell designated by 3 magnetic quantum numbers (m) = -1 0 and +1; Total number of orbitals (magnetic quantum numbers) = 2l + 1;
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| Quantum Numbers Part 3 |
Intuition about electron velocity and energy variance with respect to quantum numbers; Examples based on discussion on quantum numbers; Spin quantum number and use of Pauli exclusion principle; Introduction to Heisenberg Uncertainty principle;
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| Schrodinger Wave Equation |
Revision of all concepts in quantum numbers; Schrodinger wave equation (as a physical concept of standing waves); Electron as a wave which has amplitude Si and the concept that Si square is the probability of finding electrons as a function of the distance from nucleus, and using Schrodinger wave equation to visualize the *regions* where probability of electrons is highest; For s subshells: concept of nodes and nodal surfaces (e.g. between 1s and 2s surfaces) where probability of finding electrons is zero; For p subshells: concept of nodal planes by visualizing the planes where probability of finding electron is zero; Concept of radial or spherical nodes and angular nodes; Introduction to radial distribution factor (RDF); Number of maxima, number of nodal points and number of angular nodes in a RDF;
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| Schrodinger Wave Equation And Radial Distribution Factor |
Reviewing radial distribution factor (RDF);
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| Atomic Structure Introduction Part 1 |
Discussion on Bohr's atomic model, and its handling of electron energy as a function of angular momentum; Bohr's concept that electron energy in shells is quantized and angular momentum is fixed for a given electron in a shell; Forces acting between an electron and the nuclear charge;
Demo video lecture Click to play |
| Atomic Structure Introduction Part 2 |
Energy discussions for electrons in various shells around a nuclear charge; Kinetic energy and potential energy; Illustration of photo electric effect;
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