[kevinkevin]

  Why does the lead (II) ion loose its 6p electrons before its 6s electrons?  And how come the lead (IV) ion looses its 6p electrons and then its 6s electrons?  Why don't all the electrons just come out of the 6p sublevel?   Thanks!

[ramboacid]

Lead only has 2 electrons in the 6p sublevel, so it can't lose 4 electrons from there...

Generally metals will lose their p-sublevel electrons before their s-sublevel electrons because electrons in p-orbitals are held less strongly by the nucleus than those in s-orbitals are.

[kevinkevin]

  I'm sorry I was in a hurry when I wrote this and I did not think about the question well enough, that first part was very dumb of me.  Thank you for the information on the second part, that makes sense.