Metallic Bonding
Metals
are found on the left hand side of the table
approximately 3/4 of the known elements
many general properties in common, some don't have all
ability to conduct electricity
high melting and boiling points
mailability
the ability to be hammered in to new shapes and not shatter or break
tend to have only a few electrons in their outer shell
therefore not stable
prefer to have a full outer shell
bonding
lose the electrons out of its outer shell
it is not donated to another atom
remain in area around metal atom
end up with a block of positive metal atoms surrounded by all the atoms they have lost from their outer shells
these atoms no longer belong to one atom in particular so are described as delocalised
the glue that holds the metal ions together, is the attraction to delocalised electrons
metallic bonding
positive metal ions surrounded by a sea of delocalised electrons
because the attractions between electrons and positive ions are so numerous
requires a lot of energy to separate bonds
this is because the attraction between metals and electrons are strong but not fixed.