2. Draw the atomic structure of a sodium atom and a sodium ion....explain why you draw it this way.( The crosses are a bit faint(sry) look closely and you can see it =) )
Firstly, the a sodium atome will have the electric configuration of (2.8.1) therefore having three shells, the first shell accept 2 electron while the second 8, the third is left with the extra 1 electron. For the Sodium Ion the sodium have an extra one electron had give it away to become stable therefore resulting in the 2 shells.
Sodium Atom

 Sodium Ion