The periodic table displays the symbols and 1 of the elements along with information about the structures of their
2 . The Group 1A elements are called 3 , and the
Group 2A elements are called 4 . The elements in Groups 1A
through 7A are called the 5 . The nonmetals of Group 7A
are 6 , and the 7 make up Group 8A. Between Groups
2A and 3A, there are 8 in periods 4 through 7 and 9
in periods 6 and 7.
The atoms of the noble gas elements have their highest occupied
s and 10 sublevels filled. The highest occupied s and p
sublevels of the representative elements are 11 .