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Lanthanide
Actinide
Superactinide
Ion of Radon, Z=86, I.P.=173000 cm-1
References:
Biemont E., Quinet P. // Phys. Scr. - 1996 - Vol. 54, ¹ 1 - P. 36-43.
Biemont E., Quinet P. // Phys. Scr. - 1996 - Vol. 54, ¹ 1 - P. 36-43.