How can I draw metallic bonds?
It's like ionic bonding but with a "sea of electrons".
Metals tend to form cations. In metallic bonding, metals become cations and release out electrons in the open. When there are many of these cations, there are also lots of electrons. These electrons are "delocalised" and do not belong to the metal ions anymore. This creates an attract between the opposite charges of the electrons and the metal ions.
A picture is seen here: