Shapes of Molecules (OCR)

20255996
Flashcards by 20255996, updated more than 1 year ago
20255996
Created by 20255996 over 5 years ago
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Description

Flashcards to help with learning the shapes and bond angles of molecules, with examples and dot-cross diagrams.

Resource summary

Question Answer
Linear -2 electron pairs -3 atoms -180 degree bond angles Example: Carbon Dioxide
Trigonal Planar -3 electron pairs -4 atoms -120 degree bond angles Example: Boron Trifluoride
Tetrahedral -4 electron pairs -5 atoms -109.5 degree bond angles Example: Methane
Trigonal Bipyramid -5 electron pairs -6 atoms -180 degree and 120 degree bond angles Example: Phosphorous Pentachloride
Octahedral -6 electron pairs -7 atoms -90 degree bond angles Example: Sulfur Hexafluoride
Lone pairs -A pair of electrons that are not involved in a (covalent) bond. -There is more repulsion made by lone pairs than bonding pairs as they are closer. -They are worth 2.5 degree per lone pair. Example: Water
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