COVALENT BONDING

Description

Mind Map on COVALENT BONDING, created by CrazyFreeMind on 11/01/2015.
CrazyFreeMind
Mind Map by CrazyFreeMind, updated more than 1 year ago
CrazyFreeMind
Created by CrazyFreeMind almost 10 years ago
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Resource summary

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