Lifetimes (s) | Energy levels (cm −1 ) | Configurations | Terms | Leading Percentage |
1.096 × 10 −9 | 208,204 | 1s 2 2p | 2 P 1/2 | 100% |
9.360 × 10 −10 | 219,430 | 1s 2 2p | 2 P 3/2 | 100% |
1.539 × 10 −12 | 2,846,080 | 1s 2 3p | 2 P 1/2 | 100% |
1.533 × 10 −12 | 2,849,410 | 1s 2 3p | 2 P 3/2 | 100% |
2.613 × 10 −12 | 3,756,701 | 1s 2 4p | 2 P 1/2 | 100% |
2.608 × 10 −12 | 3,764,548 | 1s 2 4p | 2 P 3/2 | 100% |
2.547 × 10 −12 | *3,774,240 | 1s 2 4f | 2 F 5/2 | 100% |
2.553 × 10 −12 | *3,774,380 | 1s 2 4f | 2 F 7/2 | 100% |
4.396 × 10 −12 | *4,193,330 | 1s 2 5p | 2 P 1/2 | 100% |
4.392 × 10 −12 | *4,193,980 | 1s 2 5p | 2 P 3/2 | 100% |
4.773 × 10 −12 | *4,199,015 | 1s 2 5f | 2 F 5/2 | 100% |
4.783 × 10 −12 | *4,199,115 | 1s 2 5f | 2 F 7/2 | 100% |
7.060 × 10 −12 | *4,422,548 | 1s 2 6p | 2 P 1/2 | 100% |
7.055 × 10 −12 | *4,422,920 | 1s 2 6p | 2 P 3/2 | 100% |
8.124 × 10 −12 | *4,425,825 | 1s 2 6f | 2 F 5/2 | 100% |
8.135 × 10 −12 | *4,425,885 | 1s 2 6f | 2 F 7/2 | 100% |
2.126 × 10 −11 | *4,426,025 | 1s 2 6h | 2 H 9/2 | 100% |
2.127 × 10 −11 | *4,426,050 | 1s 2 6h | 2 H 11/2 | 100% |
1.071 × 10 −11 | *4,560,525 | 1s 2 7p | 2 P 1/2 | 100% |
1.070 × 10 −11 | *4,560,760 | 1s 2 7p | 2 P 3/2 | 100% |
1.554 × 10 −11 | *4,649,965 | 1s 2 8p | 2 P 1/2 | 100% |
1.554 × 10 −11 | *4,650,120 | 1s 2 8p | 2 P 3/2 | 100% |
6.017 × 10 −11 | 17,024,200 | 1s2s2p | ( 3 S) 4 P 1/2 | 100% |
2.245 × 10 −11 | 17,028,110 | 1s2s2p | ( 3 S) 4 P 3/2 | 100% |
4.400 × 10 −3 | *17,035,000 | 1s2s2p | ( 3 S) 4 P 5/2 | 100% |
2.219 × 10 −14 | 17,186,895 | 1s2s2p | ( 1 P) 2 P 1/2 | 61% + 39% 1s2s2p ( 3 S) 2 P |
2.067 × 10 −14 | 17,191,815 | 1s2s2p | ( 3 S) 2 P 3/2 | 50% + 50% 1s2s2p ( 1 S) 2 P |
1.461 × 10 −13 | 17,261,115 | 1s2s2p | ( 3 S) 2 P 1/2 | 61% + 39% 1s2s2p ( 1 S) 2 P |
2.860 × 10 −13 | 17,264,350 | 1s2s2p | ( 1 P) 2 P 3/2 | 50% + 50% 1s2s2p ( 3 S) 2 P |
6.847 × 10 −11 | 19,920,720 | 1s2s3p | ( 3 S) 4 P 1/2 | 100% |
2.375 × 10 −11 | 19,921,845 | 1s2s3p | ( 3 S) 4 P 3/2 | 100% |
3.585 × 10 −9 | *19,923,960 | 1s2s3p | ( 3 S) 4 P 5/2 | 100% |
9.801 × 10 −14 | 19,949,895 | 1s2s3p | ( 3 S) 2 P 3/2 | 99% |
9.787 × 10 −14 | 19,951,015 | 1s2s3p | ( 3 S) 2 P 1/2 | 100% |
2.294 × 10 −13 | *20,054,080 | 1s2s3p | ( 1 P) 2 P 1/2 | 100% |