Question: how many core electrons and valence electrons are in an atom of aluminum?
Answer: Aluminium has 03 valence electrons,out of its total of thirteen electrons. Explanatory justification: The electronic configuration of Aluminium applying the noble gas standard is: There you see that 3rd shell is valence,with 2ēs of 3s and 1ē from p to make a total of 03 valence electrons.