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Ontdek deur: Per Teodor Cleve, Auguste Honoré Charlois
Land van ontdekking: Opgradeer na die PRO-weergawe om al die funksies in hierdie program te ontsluit
Koste per 100 gram: 790 USD
CAS aantal: CAS7440-60-0
Elektronskulp: K2-L8-M18-N29-O8-P2-Q0-R0
Elektrone:
67
Protone:
67
Neutrone:
98
Nota
Holmium is 'n chemiese element met die simbool Ho en atoomgetal 67. Holmium is deel van die lanthanide-reeks en is 'n seldsame aarde-element. Holmium is ontdek deur die Sweedse chemikus Per Theodor Cleve.