Shapes of Molecules PDF
Document Details
Uploaded by PrudentRainforest
Tags
Summary
This document explains different shapes of molecules and the theory behind them. It provides examples like linear, V-shaped, trigonal planar, pyramidal, and tetrahedral shapes. It also discusses concepts like electron pairs, bond pairs, non-polar molecules, and dipole moments.
Full Transcript
shapes of molecules 1. Linear Can have 2 or 3 atoms Electron Pair Repulsion Theory - Electron pairs can be either: 1. Bond pairs 2. Lone pairs These electron pairs arrange themselves around a central atom. 2. V-shaped: 3 atoms As they do, they repel each other & end up as far apart as geometrically...
shapes of molecules 1. Linear Can have 2 or 3 atoms Electron Pair Repulsion Theory - Electron pairs can be either: 1. Bond pairs 2. Lone pairs These electron pairs arrange themselves around a central atom. 2. V-shaped: 3 atoms As they do, they repel each other & end up as far apart as geometrically possible. The order of strength of repulsion is: lp : lp > lp : bp > bp : bp Some molecules can have polar bonds, but be non-polar 3. Trigonal Planar: overall. This occurs when molecule has a high degree of symmetry, and also has a geometric centre 4 atoms Dipoles are separated centres of charge. 4. Pyramidal: 3 atoms 5. Tetrahedral: 5 atoms a
