11 Chap 3 | Chemical Bonding 06 | VSEPR theory | AB2 , AB3, AB4 | Shape Geometry , Hybridisation etc скачать в хорошем качестве

11 Chap 3 | Chemical Bonding 06 | VSEPR theory | AB2 , AB3, AB4 | Shape Geometry , Hybridisation etc

📘 Shapes and Geometry of AB₂, AB₃, and AB₄ Molecules by VSEPR Theory | Class 11 Chemistry In this lecture, we explain the shapes and molecular geometry of AB₂, AB₃, and AB₄ types of molecules using VSEPR (Valence Shell Electron Pair Repulsion) Theory. According to VSEPR theory, electron pairs around the central atom repel each other and arrange themselves to minimize repulsion, resulting in specific molecular shapes. For AB₂ molecules, the geometry is typically linear when no lone pairs are present, such as in BeCl₂ and CO₂. For AB₃ molecules, the shape is usually trigonal planar in the absence of lone pairs, as seen in BF₃, while the presence of lone pairs can lead to shapes like trigonal pyramidal (NH₃). For AB₄ molecules, the ideal geometry is tetrahedral, as observed in CH₄, while lone pair effects can change the shape to see-saw or square planar in some cases. This lecture helps students understand how bonding pairs, lone pairs, and electron repulsion determine molecular geometry, which is essential for mastering chemical bonding and molecular structure in Class 11 Chemistry. Lecture link 11 Chap 3 | Chemical Bonding 05 | VSEPR theory | Shapes of Molecules | Geometry , Hybridisation ,etc    • 11 Chap 3 | Chemical Bonding 05 | VSEPR th...