IONIC CHARACTER

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IONIC CHARACTER

• The IONIC CHARACTER is the difference of electro
  negativity that exists between 2 atoms in a
  compound.
• The ionic character is used to classify the type
  of bonding and can be thought of as a measurement
  of a tug of war on the electrons by the atoms.

IONIC IONIC CHARACTER IS 1.7 AND ABOVE
INCREASING IONIC CHARACTER
POLAR COVALENT IONIC CHARACTER IS 0.4 TO ABOUT
1.7
NON POLAR COVALENT IONIC CHARACTER IS 0 TO
ABOUT 0.4
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• Calculating ionic character
• Look up the electronegativities of the elements
  in TABLE S.
• Subtract the electronegativities of only two
  elements at a time to get the ionic character.
• The ionic character is never negative.
• If one compound has a high ionic character, it
  will have a relatively high degree of ionic
  behavior as compared to a compound with lower
  ionic character.. The parameters of ionic
  behavior include
• High melting and boiling points
• The formation of hard crystal lattices.
• Conductive of electricity in the aqueous states,
  BUT not conductive in the solid state.

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• ASSESSING AN IONIC COMPOUND
• Example For a compound formed when Ca reacts
  with F please elucidate the following
• -The Ionic Character to classify the compound
• -The formula (criss cross)
• -The Lewis dot structure of the reaction.
• The ionic character is
• (electro negativity of F) (electro negativity
  of Ca) Ionic character
• ( 4.0) ( 1.0)
  3.0, it is VERY ionic.
• The Formula is

Ca2 F1-
Ca2 F1-
Ca1F2
CaF2
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Transfer Reaction
F
Ca
?
F
Ca2