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Lanthanide
Actinide
Superactinide
Ion of Mendelevium, Z=101, I.P.=0 cm-1
References:
Brewer L. // JOSA - 1971 - Vol. 61, ¹ 12 - P, 1666-1682.
Brewer L. // JOSA - 1971 - Vol. 61, ¹ 12 - P, 1666-1682.