.5 0. ] 1s 2S 1s 2S .5 [43804530. ] 2s 2S 2s 2S .5 [51948737. ] 3s 2S 3s 2S .5 [54795136. ] 4s 2S 4s 2S .5 [56110853. ] 5s 2S 5s 2S 1.5 [51978665. ] 3d 2D 3d 2D 1.5 [54807752. ] 4d 2D 4d 2D 1.5 [56117308. ] 5d 2D 5d 2D 2.5 [51988832. ] 3d 2D 3d 2D 2.5 [54812044. ] 4d 2D 4d 2D 2.5 [56119506. ] 5d 2D 5d 2D 3.5 [56120595. ] 5g 2G 5g 2G 4.5 [56121252. ] 5g 2G 5g 2G