1
Group 2 on the periodic table
2
Group 1 on the periodic table
3
Group 18 on the periodic table
4
the shells surrounding the nucleus that hold the electrons
5
Group 17 on the periodic table
6
the outer orbital of an atom
7
the name used to refer to the columns (Up-down) on the periodic table
8
the name used to refer to the rows (L-R) on the periodic table
9
non-reactive
