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Lanthanide
Actinide
Superactinide
Ion of Lawrencium, Z=103, I.P.=39518.5 cm-1
References:
Brewer L. et al. // JOSA - 1971 - Vol. 61, ¹ 8 - P. 1101-1111.
Nugent L. et al. // Phys. Rev. A - 1974 - Vol. 9, ¹ 6 - - 2270-2273.
Wijesundera W., Vosko S. // Phys. Rev A - 1995 - Vol. 51, ¹ 1 - P. 278-282.
Zou Yu, Fischer F. // Phys. Rev. Lett. - 2002 - Vol. 88, ¹ 18 - P. 183001.