Chemistry teacher

🧠 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...