2.300 × 10 −13

*20,057,670

1s2s3p

( 1 P) 2 P 3/2

100%

1.247 × 10 −9

*20,851,270

1s2s4p

( 3 S) 4 P 1/2

100%

4.749 × 10 −10

*20,851,760

1s2s4p

( 3 S) 4 P 3/2

100%

1.054 × 10 −7

*20,852,600

1s2s4p

( 3 S) 4 P 5/2

100%

2.236 × 10 −13

20,886,130

1s2s4p

( 3 S) 2 P 3/2

99%

2.236 × 10 −13

20,886,620

1s2s4p

( 3 S) 2 P 1/2

99%

3.982 × 10 −13

*20,987,940

1s2s4p

( 1 P) 2 P 1/2

99%

3.982 × 10 −13

*20,989,430

1s2s4p

( 1 P) 2 P 3/2

99%