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1855128
COVALENT BONDING
Description
Mind Map on COVALENT BONDING, created by CrazyFreeMind on 11/01/2015.
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chemistry
covalent bonding
Mind Map by
CrazyFreeMind
, updated more than 1 year ago
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Created by
CrazyFreeMind
over 9 years ago
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Resource summary
COVALENT BONDING
bond length: single < double < triple
bond strength: single < double < triple
use VSEPR to predict the shapes of molecules
pairs of valence electrons repel each other and will take up positions to minimise these repulsions
lone pairs repel more than bonding pairs
giant covalent compounds
have high melting points because covalent bonds are broken when melting
Examples
silicon
SiO2
diamond
graphite
covalent molecular compounds
non-polar molecules
polar molecules
difference in electronegativity: electrons lie more towards one atom than another
shape of molecules: if the dipole moments of individual bonds cancel, the molecule is not polar
only intermolecular forces are broken when melting
Van der Waals forces caused by instantaneous and induced dipoles
dipole-dipole forces
hydrogen bonds
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