Holmium

Holmium (Ho)

chemical element with atomic number 67
Atomic Number67
Atomic Weight164.93033
Massagetal165
Group
Period6
Blockf
proton67 p+
neutron98 n0
elektron67 e-
Animated Bohr model of Ho (Holmium)

Physical Property

Atoomradius
175 pm
molar volume
Covalent Radius
166 pm
Metallic Radius
Ioonradius
90,1 pm
Crystal Radius
104,1 pm
Van der Waals radius
230 pm
density
8,8 g/cm³
Atomic Radii Of The Elements: Holmium0153045607590105120135150165180195210225240pmAtoomradiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energie
proton affinity
electron affinity
ionization energy
ionization energy of Ho (Holmium)
Verdampingswarmte
301 kJ/mol
smeltingswarmte
Vormingsentalpie
300,6 kJ/mol
elektron
Elektronskil2, 8, 18, 29, 8, 2
Bohr model: Ho (Holmium)
Valenselektrone2
Lewisteorie: Ho (Holmium)
elektronkonfigurasie[Xe] 4f11 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f11 6s2
Enhanced Bohr model of Ho (Holmium)
Orbital Diagram of Ho (Holmium)
Oksidasietoestand0, 2, 3
Elektronegatiwiteit
1.23
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
2 973,15 K
Melting Point
1 745,15 K
critical pressure
critical temperature
triple point
appearance
kleur
Silver
appearancesilvery white
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000112 1/K
molar heat capacity
27,15 J/(mol K)
Specific Heat Capacity
0,165 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
Geleidingsvermoë
1,1 MS/m
Elektriese resistiwiteit
0,00000094 m Ω
superconductivity
Magnetisme
typeparamagnetic
magnetic susceptibility (Mass)
0,00000549 m³/Kg
magnetic susceptibility (Molar)
0,000000905467 m³/mol
magnetic susceptibility (Volume)
0,0482845
magnetic ordering
Curie temperature
20 K
Néel temperature
132 K
structure
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3,58 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
Massamodulus
40 GPa
Skuifmodulus
26 GPa
Young se modulus
65 GPa
Poisson se verhouding
0,23
Spoed van klank
2 760 m/s
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number23
Mendeleev Number33
Pettifor Number24
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
156 ± 10 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
64
Neutron Mass Absorption
0,015
quantum number4I15/2
Ruimtegroep194 (P63/mmc)

Isotopes of Holmium

Stable Isotopes1
Unstable Isotopes38
Natural Isotopes1

140Ho

Massagetal140
neutron number73
relative atomic mass
139,968526 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
6 ± 3 ms
spin8
nuclear quadrupole moment
ontdekkingsdatum1999
parity+

decay modeintensity
p (proton emission)
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

141Ho

Massagetal141
neutron number74
relative atomic mass
140,963108 ± 0,00043 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
4,1 ± 0,1 ms
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1998
parity-

decay modeintensity
p (proton emission)100%
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

142Ho

Massagetal142
neutron number75
relative atomic mass
141,96001 ± 0,00043 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
400 ± 100 ms
spin7
nuclear quadrupole moment
ontdekkingsdatum2001
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)
p (proton emission)0%

143Ho

Massagetal143
neutron number76
relative atomic mass
142,95486 ± 0,00032 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin11/2
nuclear quadrupole moment
ontdekkingsdatum2000
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

144Ho

Massagetal144
neutron number77
relative atomic mass
143,952109712 ± 0,0000091 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
700 ± 100 ms
spin5
nuclear quadrupole moment
ontdekkingsdatum1986
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

145Ho

Massagetal145
neutron number78
relative atomic mass
144,947267392 ± 0,000008 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,4 ± 0,1 s
spin11/2
nuclear quadrupole moment
ontdekkingsdatum1987
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

146Ho

Massagetal146
neutron number79
relative atomic mass
145,944993503 ± 0,000007071 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
3,32 ± 0,22 s
spin6
nuclear quadrupole moment
ontdekkingsdatum1982
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

147Ho

Massagetal147
neutron number80
relative atomic mass
146,940142293 ± 0,000005368 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
5,8 ± 0,4 s
spin11/2
nuclear quadrupole moment
ontdekkingsdatum1982
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

148Ho

Massagetal148
neutron number81
relative atomic mass
147,937743925 ± 0,00009 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,2 ± 1,1 s
spin1
nuclear quadrupole moment
ontdekkingsdatum1979
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

149Ho

Massagetal149
neutron number82
relative atomic mass
148,933820457 ± 0,000012866 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
21,1 ± 0,2 s
spin11/2
nuclear quadrupole moment
ontdekkingsdatum1979
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

150Ho

Massagetal150
neutron number83
relative atomic mass
149,933498353 ± 0,000015209 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
76,8 ± 1,8 s
spin2
nuclear quadrupole moment
ontdekkingsdatum1963
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

151Ho

Massagetal151
neutron number84
relative atomic mass
150,931698176 ± 0,000008908 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
35,2 ± 0,1 s
spin11/2
nuclear quadrupole moment
ontdekkingsdatum1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)88%
α (α emission)22%

152Ho

Massagetal152
neutron number85
relative atomic mass
151,931717618 ± 0,000013449 Da
g-factor
-0,51 ± 0,01
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
161,8 ± 0,3 s
spin2
nuclear quadrupole moment
0,1 ± 0,2
ontdekkingsdatum1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)88%
α (α emission)12%

153Ho

Massagetal153
neutron number86
relative atomic mass
152,930206671 ± 0,000005438 Da
g-factor
1,2345454545455 ± 0,0090909090909091
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,01 ± 0,03 m
spin11/2
nuclear quadrupole moment
-1,1 ± 0,5
ontdekkingsdatum1963
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.949%
α (α emission)0.051%

154Ho

Massagetal154
neutron number87
relative atomic mass
153,930606776 ± 0,00000882 Da
g-factor
-0,3205 ± 0,003
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
11,76 ± 0,19 m
spin2
nuclear quadrupole moment
0,19 ± 0,1
ontdekkingsdatum1966
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.981%
α (α emission)0.019%

155Ho

Massagetal155
neutron number88
relative atomic mass
154,929103363 ± 0,000018754 Da
g-factor
1,4 ± 0,012
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
48 ± 2 m
spin5/2
nuclear quadrupole moment
1,56 ± 0,12
ontdekkingsdatum1959
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

156Ho

Massagetal156
neutron number89
relative atomic mass
155,929641634 ± 0,000041249 Da
g-factor
0,745 ± 0,0075
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
56 ± 1 m
spin4
nuclear quadrupole moment
2,4 ± 0,18
ontdekkingsdatum1957
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

157Ho

Massagetal157
neutron number90
relative atomic mass
156,928251974 ± 0,000025194 Da
g-factor
1,24 ± 0,0085714285714286
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
12,6 ± 0,2 m
spin7/2
nuclear quadrupole moment
3,05 ± 0,13
ontdekkingsdatum1966
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

158Ho

Massagetal158
neutron number91
relative atomic mass
157,92894491 ± 0,000029099 Da
g-factor
0,7552 ± 0,0006
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
11,3 ± 0,4 m
spin5
nuclear quadrupole moment
4,2 ± 0,4
ontdekkingsdatum1961
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)

159Ho

Massagetal159
neutron number92
relative atomic mass
158,927718683 ± 0,000003268 Da
g-factor
1,22 ± 0,0085714285714286
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
33,05 ± 0,11 m
spin7/2
nuclear quadrupole moment
3,27 ± 0,13
ontdekkingsdatum1958
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

160Ho

Massagetal160
neutron number93
relative atomic mass
159,928735538 ± 0,00001612 Da
g-factor
0,74 ± 0,006
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
25,6 ± 0,3 m
spin5
nuclear quadrupole moment
4 ± 0,2
ontdekkingsdatum1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

161Ho

Massagetal161
neutron number94
relative atomic mass
160,927861815 ± 0,000002309 Da
g-factor
1,2114285714286 ± 0,0085714285714286
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,48 ± 0,05 h
spin7/2
nuclear quadrupole moment
3,3 ± 0,11
ontdekkingsdatum1954
parity-

decay modeintensity
ϵ (electron capture)100%

162Ho

Massagetal162
neutron number95
relative atomic mass
161,929102543 ± 0,00000333 Da
g-factor
2,32 ± 0,03
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
15 ± 1 m
spin1
nuclear quadrupole moment
ontdekkingsdatum1957
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

163Ho

Massagetal163
neutron number96
relative atomic mass
162,92874026 ± 0,000000744 Da
g-factor
1,2057142857143 ± 0,011428571428571
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
4,57 ± 0,025 ky
spin7/2
nuclear quadrupole moment
3,7 ± 0,6
ontdekkingsdatum1957
parity-

decay modeintensity
ϵ (electron capture)100%

164Ho

Massagetal164
neutron number97
relative atomic mass
163,930240548 ± 0,000001492 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
28,8 ± 0,5 m
spin1
nuclear quadrupole moment
ontdekkingsdatum1938
parity+

decay modeintensity
ϵ (electron capture)61%
β+ (β+ decay; β+ = ϵ + e+)39%

165Ho

Massagetal165
neutron number98
relative atomic mass
164,930329116 ± 0,000000844 Da
g-factor
1,1885714285714 ± 0,0085714285714286
natural abundance
100
radioaktiwiteitStabiele isotoop
HalfleeftydNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
3,58 ± 0,02
ontdekkingsdatum1934
parity-

166Ho

Massagetal166
neutron number99
relative atomic mass
165,932291209 ± 0,000000844 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
26,812 ± 0,007 h
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1936
parity-

decay modeintensity
β (β decay)100%

167Ho

Massagetal167
neutron number100
relative atomic mass
166,933140254 ± 0,00000557 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
3,1 ± 0,1 h
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1955
parity-

decay modeintensity
β (β decay)100%

168Ho

Massagetal168
neutron number101
relative atomic mass
167,935523766 ± 0,000032207 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,99 ± 0,07 m
spin3
nuclear quadrupole moment
ontdekkingsdatum1960
parity+

decay modeintensity
β (β decay)100%

169Ho

Massagetal169
neutron number102
relative atomic mass
168,93687989 ± 0,000021522 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
4,72 ± 0,1 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1963
parity-

decay modeintensity
β (β decay)100%

170Ho

Massagetal170
neutron number103
relative atomic mass
169,939626548 ± 0,000053697 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,76 ± 0,05 m
spin6
nuclear quadrupole moment
ontdekkingsdatum1960
parity+

decay modeintensity
β (β decay)100%

171Ho

Massagetal171
neutron number104
relative atomic mass
170,941472713 ± 0,000644128 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
53 ± 2 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1989
parity-

decay modeintensity
β (β decay)100%

172Ho

Massagetal172
neutron number105
relative atomic mass
171,94473 ± 0,00021 Da
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
25 ± 3 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1991
parity+

decay modeintensity
β (β decay)100%

173Ho

Massagetal173
neutron number106
relative atomic mass
172,94702 ± 0,00032 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,1 ± 0,4 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum2012
parity-

decay modeintensity
β (β decay)100%

174Ho

Massagetal174
neutron number107
relative atomic mass
173,950757 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
3,7 ± 0,4 s
spin8
nuclear quadrupole moment
ontdekkingsdatum2012
parity-

decay modeintensity
β (β decay)100%

175Ho

Massagetal175
neutron number108
relative atomic mass
174,953516 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,88 ± 0,55 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum2012
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

176Ho

Massagetal176
neutron number109
relative atomic mass
175,957713 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin4
nuclear quadrupole moment
ontdekkingsdatum2012
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

177Ho

Massagetal177
neutron number110
relative atomic mass
176,961052 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin7/2
nuclear quadrupole moment
ontdekkingsdatum2018
parity-

decay modeintensity
β (β decay)100%
n (neutron emission)

178Ho

Massagetal178
neutron number111
relative atomic mass
177,965507 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin2
nuclear quadrupole moment
ontdekkingsdatum2018
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Holmium

geskiedenis

Ontdek deurJ.L. Soret
ligging van ontdekkingSwitzerland
ontdekkingsdatum1878
etimologieFrom Holmia, the Latinized name for Stockholm, Sweden.
uitspraakHOLE-mi-em (Engels)

source

Abundance
Abundance in Earth's crust
1,3 mg/kg
natural abundance (oseaan)
0,00000022 mg/L
natural abundance (human body)
natural abundance (Meteoroïde)
0,0000059 %
natural abundance (Son)
0 %
Abundance in Universe
0,00000005 %

Nuclear Screening Constants

1s1.3088
2p4.3332
2s17.5444
3d13.6531
3p20.2546
3s20.7649
4d35.3284
4f39.5304
4p32.4372
4s31.688
5p49.661
5s47.424
6s58.561