How does sodium conduct electricity?? Watch
sodium metal demonstrates metallic bonding when it is in solid state. This means there is a 'sea of delocalised electrons' that hold many positive ions in a lattice together (rather like a glue). This sea of electrons are free to move around. When a potential difference is applied to the ends of the metal (a positive and negative terminal), the negative electrons are repelled away from the negative terminal and attracted to the positive terminal - thus allowing a current to flow.