Transcript Ionic Bonding - Prairie Spirit School Division

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There is a general rule that states that atoms
will arrange themselves in an order that will
allow them to have eight electrons in their
outer shell - or eight valence electrons. This
is called the octet rule
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Ionic bonds are formed by one atom
transferring electrons to another atom to
form ions.
They are formed between a metal and a non
metal
metals form positive ions by losing electrons
nonmetals form negative ions by gaining
electrons
the ionic bond is the attraction between the
ions of unlike charge
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Once you have drawn out the Lewis diagram
for elements it is easy to see how they
connect to make the octet rule
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Another way to figure out what the ionic
formula is to know that the net ionic charge
must equal zero
In other words when you add the charges
together they must balance out and equal
zero
This holds true for binary compounds and
polyatomic ions
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Binary compounds are when a bond is formed
between 2 elements.
there are two simple rules:
1. Always start the name with the metal first
and then the non-metal.
2. The non-metal suffix changes to 'ide'.
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Example:
Compound
1.KCl
2. Na3P
Chemical Name
potassium chloride
sodium phosphide
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To name polyatomic ionic compounds, use
the same rules but use the polyatomic sheet
to name the molecule.
Example:
Compound
CaCO3
NH4NO3
Chemical Name
calcium carbonate
ammonium nitrate