'ELE Z(Cl) = 17 1S2 2S2 2P6 3S2 3P5 2 4 10 12 17 2P6 = (n=2, l=1, m=6) 3S6 = (n=3, l=0, m=6) 3P5 = (n=3, l=1, m=5) 17 Prog {ELE} U 2.1E+06 V 3.0E+02 W 3.1E+05 M: auxiliary N: auxiliary O: auxiliary P: auxiliary Q: auxiliary R: auxiliary U: 3th last orbital definition V: 2th last orbital definition W: last orbital definition ---------