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Quantum Numbers (Principal, Azimuthal, Magnetic & Spin) - Definition, Detailed Explanation with Videos

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Table of Contents What are Quantum NumbersRecommended VideosPrincipal Quantum NumberAzimuthal Quantum NumberMagnetic Quantum NumberElectron Spin Quantum NumberSummary Quantum numbers can be used to describe the trajectory and the movement of an electron in an atom. The quantum numbers of all the electrons in a given atom, when combined, must comply with the Schrodinger equation. What are Quantum Numbers? The set of numbers used to describe the position and energy of the electron in an atom are called quantum numbers. There are four quantum numbers, namely, principal, azimuthal, magnetic and spin quantum numbers. The values of the conserved quantities of a quantum system are given by quantum numbers. Electronic quantum numbers (the quantum numbers describing electrons) can be defined as a group of numerical values which provide solutions that are acceptable by the Schrodinger wave equation for hydrogen atoms. Quantum Numbers and Atomic Orbitals Four quantum numbers can be used to compl...
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Electron Configuration - Detailed Explanation with Examples

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Table of Contents Introduction to What are Electron Configurations?Writing Electron ConfigurationsFilling of Atomic OrbitalsExamples Introduction: What are Electron Configurations? The electron configuration of an element describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence. For example, the electron configuration of sodium is 1s 2 2s 2 2p 6 3s 1 . However, the standard notation often yields lengthy electron configurations (especially for elements having a relatively large atomic number). In such cases, an abbreviated or condensed notation may be used instead of the standard notation. In the abbreviated notation, the sequence of completely filled subshells that correspond to the electronic configuration of a noble gas is replaced with the symbol of that noble gas in square bracke...
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