H I energy levels 0.00000 2 1 1s 0 82258.955 2 2 2s 0 82258.955 6 2 2p 0 97492.223 2 3 3s 0 97492.223 6 3 3p 0 97492.223 10 3 3d 0 102823.896 2 4 4s 0 102823.896 6 4 4p 0 102823.896 10 4 4d 0 * 0 0 1 0 0 0 0 0.0 0.0