Holmio
67
Ho
Grupo
Neniu
Perio
6
Bloko
f
Protonoj
Elektronoj
Neŭtronoj
67
67
98
Ĝeneralaj Propraĵoj
Atoma Nombro
67
Atommaso
164,93032
Amasa Nombro
165
Kategorio
Lantanoidoj
Koloro
Arĝento
Radioaktiva
Ne
From the Latin word Holmia meaning Stockholm
Kristala Strukturo
Simpla Sesangula
Historio
Holmium was discovered by Swiss chemists Marc Delafontaine and Jacques-Louis Soret in 1878.
They noticed the aberrant spectrographic absorption bands of the then-unknown element.
Later in 1878, Per Teodor Cleve independently discovered the element while he was working on erbia earth.
They noticed the aberrant spectrographic absorption bands of the then-unknown element.
Later in 1878, Per Teodor Cleve independently discovered the element while he was working on erbia earth.
Elektronoj per ŝelo
2, 8, 18, 29, 8, 2
Elektrona Agordo
[Xe] 4f11 6s2
Holmium has the highest magnetic strength of any naturally occurring element
Fizikaj Propraĵoj
Fazo
Solido
Denso
8,795 g/cm3
Fandpunkto
1734,15 K | 1461 °C | 2661,8 °F
Bolpunkto
2993,15 K | 2720 °C | 4928 °F
Varmo de Fuzio
17 kJ/mol
Varmo de Vaporiĝo
265 kJ/mol
Specifa Varmo Kapacito
0,165 J/g·K
Krusta Abundo
0,00012%
Universa Abundo
5×10-8%
CAS Nombro
7440-60-0
PubChem Kunmetita Identiga Nombro
23988
Atomaj Propraĵoj
Atoma Radiuso
176 pm
Kovalenta Radiuso
192 pm
Elektronegativeco
1,23 (Pauling-skalo)
Potencialo de jonigo
6,0215 eV
Atoma Volumo
18,7 cm3/mol
Termika Kondukto
0,162 W/cm·K
Oksidaj Ŝtatoj
3
Aplikoj
Holmium is used to create the strongest artificially generated magnetic fields, when placed within high-strength magnets as a magnetic pole piece.
It is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring.
Holmium isotopes are good neutron absorbers and are used in nuclear reactor control rods.
It is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring.
Holmium isotopes are good neutron absorbers and are used in nuclear reactor control rods.
Holmium is considered to be of low toxicity
Izotopoj
Stabilaj Izotopoj
165HoMalstabilaj Isotopoj
140Ho, 141Ho, 142Ho, 143Ho, 144Ho, 145Ho, 146Ho, 147Ho, 148Ho, 149Ho, 150Ho, 151Ho, 152Ho, 153Ho, 154Ho, 155Ho, 156Ho, 157Ho, 158Ho, 159Ho, 160Ho, 161Ho, 162Ho, 163Ho, 164Ho, 166Ho, 167Ho, 168Ho, 169Ho, 170Ho, 171Ho, 172Ho, 173Ho, 174Ho, 175Ho