Atom

α D au

errors

L state

H

4.50

0

1S

Li

164.1125

5 × 10−4

2S1/2

Mg

71.3

±0.4

1S

Na

162.7

±0.5

1S

Cs

400.9

±0.7

1S

K

289.1

±0.3

1S

Ca

160.8

±4

1S