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Ionic Compounds
· Giant structures of ions.
· Held together by strong electrostatic
forces between oppositely charged
ions.
· This is called ionic bonding.
· Ionic compounds:
o High melting/boiling points.
o Conduct electricity when molten or in
solution ­ ions are free to move.…read more

Slide 3

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The Ionic Bond
· Occurs between a metal and non-
metal.
· Involves transfer of electrons from one
atom to the other.
· Forms ions with full outer shells.
· Ions have the structure of noble gases.
· Atoms which lose electrons become
positive ions.
· Atoms which gain electrons become
negative ions.
· Examples are:…read more

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Example 1: Sodium Chloride
· The sodium atom
has one electron
on its outer shell.
· The electron is
transferred to the
chlorine atom.
· Both atoms now
have eight
electrons on their
outer shells.
· The atoms
become ions, Na+
and Cl-…read more

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Example 2: Magnesium Oxide
· The magnesium
atom has two
electrons on its
outer shell.
· These are
transferred to the
oxygen atom.
· Both atoms now
have eight
electrons on their
outer shells.
· The atoms
become ions, Mg+2…read more

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