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Orbitals and Quantum Numbers Class 11 Notes, MCQs & Questions

- Dr.Sanjaykumar Pawar     Orbitals and Quantum Numbers explained with shells, subshells and orbital orientation for Class 11 Chemistry. ORBITALS AND QUANTUM NUMBERS │ ├── Orbitals │   │ │   ├── Region of maximum electron probability │   ├── Differ in: │   │   ├── Size │   │   ├── Shape │   │   └── Orientation │   │ │   └── Described by Quantum Numbers │ ├── Principal Quantum Number (n) │   │ │   ├── Determines: │   │   ├── Size of orbital │   │   └── Energy of orbital │   │ │   ├── Values: │   │   └── 1, 2, 3, 4, ... │   │ │   ├── Shell Names: │   │   ├── n = 1 → K │   │   ├── n = 2 → L │   │   ├── n = 3 → M │   │   └── n = 4 → N │   │ │   ├── Inc...

Quantum Numbers and Orbitals Explained for NEET Students

🧠 Orbitals and Quantum Numbers (NEET Notes) The four quantum numbers determine the shell, shape, orientation and spin of an electron in an atom. - Dr.Sanjaykumar Pawar  🌌 Orbitals Concept In an atom, a large number of orbitals are possible for electrons. Orbitals are different based on: Size Shape Orientation Smaller orbital size means: Electron is more likely to be found close to nucleus Shape of orbital means: Electron is more likely found in certain regions of space Orientation of orbital means: Direction in space where electron probability is higher 🔢 Quantum Numbers Every atomic orbital is described by three quantum numbers : Principal quantum number ( n ) Azimuthal quantum number ( l ) Magnetic quantum number ( mₗ ) 📏 1. Principal Quantum Number (n) It is a positive integer : n = 1, 2, 3, 4, … It defines: Size of orbital Energy of orbital (mainly) For hydrogen and hydrogen-like species: Energy depends only...