.5         0.                2s 2S                    2s 2S                  
    .5 [10055000.   ]            3s 2S                    3s 2S                  
    .5 [13517000.   ]            4s 2S                    4s 2S                  
   1.5 [10253000.   ]            3d 2D                    3d 2D                  
   1.5 [13597000.   ]            4d 2D                    4d 2D                  
   2.5 [10267000.   ]            3d 2D                    3d 2D                  
   2.5 [13604000.   ]            4d 2D                    4d 2D