Alkali Metals
Group 1 Period 2 3 Li 3 11 Na 4 19 K 5 37 Rb 6 55 Cs 7 87Fr The alkali metals are a series of chemical elements in the periodic table. In...
Engineering Technology
Group 1 Period 2 3 Li 3 11 Na 4 19 K 5 37 Rb 6 55 Cs 7 87Fr The alkali metals are a series of chemical elements in the periodic table. In...