Holmjum, ²Olmju

Holmjum, ²Olmju (Ho)

chemical element with atomic number 67
Atomic Number67
Atomic Weight164.93033
mass number165
Group
Period6
Blockf
proton67 p+
neutron98 n0
elettron67 e-
Animated Bohr model of Ho (Holmjum, ²Olmju)

Physical Property

Atomic Radius
175 pm
molar volume
covalent radius
166 pm
Metallic Radius
ionic radius
90.1 pm
Crystal Radius
104.1 pm
Van der Waals radius
230 pm
densità
8.8 g/cm³
Atomic Radii Of The Elements: Holmjum, ²Olmju0153045607590105120135150165180195210225240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

enerġija
proton affinity
electron affinity
ionization energy
ionization energy of Ho (Holmjum, ²Olmju)
enthalpy of vaporization
301 kJ/mol
enthalpy of fusion
standard enthalpy of formation
300.6 kJ/mol
elettron
electron shell2, 8, 18, 29, 8, 2
Bohr model: Ho (Holmjum, ²Olmju)
valence electron2
Lewis structure: Ho (Holmjum, ²Olmju)
electron configuration[Xe] 4f11 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f11 6s2
Enhanced Bohr model of Ho (Holmjum, ²Olmju)
Orbital Diagram of Ho (Holmjum, ²Olmju)
oxidation number0, 2, 3
electronegativity
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
kulur
Silver
appearancesilvery white
refractive index
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
electrical conductivity
1.1 MS/m
electrical resistivity
0.00000094 m Ω
superconductivity
magnetism
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
bulk modulus
40 GPa
shear modulus
26 GPa
Young's modulus
65 GPa
Poisson's ratio
0.23
speed of sound
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
space group194 (P63/mmc)

Isotopes of Holmium

Stable Isotopes1
Unstable Isotopes38
Natural Isotopes1

140Ho

mass number140
neutron number73
relative atomic mass
139.968526 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6 ± 3 ms
spin8
nuclear quadrupole moment
time of discovery or invention1999
parity+

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

141Ho

mass number141
neutron number74
relative atomic mass
140.963108 ± 0.00043 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.1 ± 0.1 ms
spin7/2
nuclear quadrupole moment
time of discovery or invention1998
parity-

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

142Ho

mass number142
neutron number75
relative atomic mass
141.96001 ± 0.00043 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
400 ± 100 ms
spin7
nuclear quadrupole moment
time of discovery or invention2001
parity-

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

143Ho

mass number143
neutron number76
relative atomic mass
142.95486 ± 0.00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin11/2
nuclear quadrupole moment
time of discovery or invention2000
parity-

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

144Ho

mass number144
neutron number77
relative atomic mass
143.952109712 ± 0.0000091 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
700 ± 100 ms
spin5
nuclear quadrupole moment
time of discovery or invention1986
parity-

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

145Ho

mass number145
neutron number78
relative atomic mass
144.947267392 ± 0.000008 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.4 ± 0.1 s
spin11/2
nuclear quadrupole moment
time of discovery or invention1987
parity-

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

146Ho

mass number146
neutron number79
relative atomic mass
145.944993503 ± 0.000007071 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.32 ± 0.22 s
spin6
nuclear quadrupole moment
time of discovery or invention1982
parity-

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

147Ho

mass number147
neutron number80
relative atomic mass
146.940142293 ± 0.000005368 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5.8 ± 0.4 s
spin11/2
nuclear quadrupole moment
time of discovery or invention1982
parity-

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

148Ho

mass number148
neutron number81
relative atomic mass
147.937743925 ± 0.00009 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.2 ± 1.1 s
spin1
nuclear quadrupole moment
time of discovery or invention1979
parity+

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

149Ho

mass number149
neutron number82
relative atomic mass
148.933820457 ± 0.000012866 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
21.1 ± 0.2 s
spin11/2
nuclear quadrupole moment
time of discovery or invention1979
parity-

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

150Ho

mass number150
neutron number83
relative atomic mass
149.933498353 ± 0.000015209 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
76.8 ± 1.8 s
spin2
nuclear quadrupole moment
time of discovery or invention1963
parity

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

151Ho

mass number151
neutron number84
relative atomic mass
150.931698176 ± 0.000008908 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
35.2 ± 0.1 s
spin11/2
nuclear quadrupole moment
time of discovery or invention1963
parity-

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

152Ho

mass number152
neutron number85
relative atomic mass
151.931717618 ± 0.000013449 Da
g-factor
-0.51 ± 0.01
natural abundance
radioactivity☢️ radioactive element
half-life
161.8 ± 0.3 s
spin2
nuclear quadrupole moment
0.1 ± 0.2
time of discovery or invention1963
parity-

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

153Ho

mass number153
neutron number86
relative atomic mass
152.930206671 ± 0.000005438 Da
g-factor
1.2345454545455 ± 0.0090909090909091
natural abundance
radioactivity☢️ radioactive element
half-life
2.01 ± 0.03 m
spin11/2
nuclear quadrupole moment
-1.1 ± 0.5
time of discovery or invention1963
parity-

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

154Ho

mass number154
neutron number87
relative atomic mass
153.930606776 ± 0.00000882 Da
g-factor
-0.3205 ± 0.003
natural abundance
radioactivity☢️ radioactive element
half-life
11.76 ± 0.19 m
spin2
nuclear quadrupole moment
0.19 ± 0.1
time of discovery or invention1966
parity-

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

155Ho

mass number155
neutron number88
relative atomic mass
154.929103363 ± 0.000018754 Da
g-factor
1.4 ± 0.012
natural abundance
radioactivity☢️ radioactive element
half-life
48 ± 2 m
spin5/2
nuclear quadrupole moment
1.56 ± 0.12
time of discovery or invention1959
parity+

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

156Ho

mass number156
neutron number89
relative atomic mass
155.929641634 ± 0.000041249 Da
g-factor
0.745 ± 0.0075
natural abundance
radioactivity☢️ radioactive element
half-life
56 ± 1 m
spin4
nuclear quadrupole moment
2.4 ± 0.18
time of discovery or invention1957
parity-

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

157Ho

mass number157
neutron number90
relative atomic mass
156.928251974 ± 0.000025194 Da
g-factor
1.24 ± 0.0085714285714286
natural abundance
radioactivity☢️ radioactive element
half-life
12.6 ± 0.2 m
spin7/2
nuclear quadrupole moment
3.05 ± 0.13
time of discovery or invention1966
parity-

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

158Ho

mass number158
neutron number91
relative atomic mass
157.92894491 ± 0.000029099 Da
g-factor
0.7552 ± 0.0006
natural abundance
radioactivity☢️ radioactive element
half-life
11.3 ± 0.4 m
spin5
nuclear quadrupole moment
4.2 ± 0.4
time of discovery or invention1961
parity+

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

159Ho

mass number159
neutron number92
relative atomic mass
158.927718683 ± 0.000003268 Da
g-factor
1.22 ± 0.0085714285714286
natural abundance
radioactivity☢️ radioactive element
half-life
33.05 ± 0.11 m
spin7/2
nuclear quadrupole moment
3.27 ± 0.13
time of discovery or invention1958
parity-

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

160Ho

mass number160
neutron number93
relative atomic mass
159.928735538 ± 0.00001612 Da
g-factor
0.74 ± 0.006
natural abundance
radioactivity☢️ radioactive element
half-life
25.6 ± 0.3 m
spin5
nuclear quadrupole moment
4 ± 0.2
time of discovery or invention1950
parity+

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

161Ho

mass number161
neutron number94
relative atomic mass
160.927861815 ± 0.000002309 Da
g-factor
1.2114285714286 ± 0.0085714285714286
natural abundance
radioactivity☢️ radioactive element
half-life
2.48 ± 0.05 h
spin7/2
nuclear quadrupole moment
3.3 ± 0.11
time of discovery or invention1954
parity-

decay modeintensity
ϵ (electron capture)100%

162Ho

mass number162
neutron number95
relative atomic mass
161.929102543 ± 0.00000333 Da
g-factor
2.32 ± 0.03
natural abundance
radioactivity☢️ radioactive element
half-life
15 ± 1 m
spin1
nuclear quadrupole moment
time of discovery or invention1957
parity+

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

163Ho

mass number163
neutron number96
relative atomic mass
162.92874026 ± 0.000000744 Da
g-factor
1.2057142857143 ± 0.011428571428571
natural abundance
radioactivity☢️ radioactive element
half-life
4.57 ± 0.025 ky
spin7/2
nuclear quadrupole moment
3.7 ± 0.6
time of discovery or invention1957
parity-

decay modeintensity
ϵ (electron capture)100%

164Ho

mass number164
neutron number97
relative atomic mass
163.930240548 ± 0.000001492 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
28.8 ± 0.5 m
spin1
nuclear quadrupole moment
time of discovery or invention1938
parity+

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

165Ho

mass number165
neutron number98
relative atomic mass
164.930329116 ± 0.000000844 Da
g-factor
1.1885714285714 ± 0.0085714285714286
natural abundance
100
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
3.58 ± 0.02
time of discovery or invention1934
parity-

166Ho

mass number166
neutron number99
relative atomic mass
165.932291209 ± 0.000000844 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
26.812 ± 0.007 h
spin0
nuclear quadrupole moment
0
time of discovery or invention1936
parity-

decay modeintensity
β (β decay)100%

167Ho

mass number167
neutron number100
relative atomic mass
166.933140254 ± 0.00000557 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.1 ± 0.1 h
spin7/2
nuclear quadrupole moment
time of discovery or invention1955
parity-

decay modeintensity
β (β decay)100%

168Ho

mass number168
neutron number101
relative atomic mass
167.935523766 ± 0.000032207 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.99 ± 0.07 m
spin3
nuclear quadrupole moment
time of discovery or invention1960
parity+

decay modeintensity
β (β decay)100%

169Ho

mass number169
neutron number102
relative atomic mass
168.93687989 ± 0.000021522 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.72 ± 0.1 m
spin7/2
nuclear quadrupole moment
time of discovery or invention1963
parity-

decay modeintensity
β (β decay)100%

170Ho

mass number170
neutron number103
relative atomic mass
169.939626548 ± 0.000053697 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.76 ± 0.05 m
spin6
nuclear quadrupole moment
time of discovery or invention1960
parity+

decay modeintensity
β (β decay)100%

171Ho

mass number171
neutron number104
relative atomic mass
170.941472713 ± 0.000644128 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
53 ± 2 s
spin7/2
nuclear quadrupole moment
time of discovery or invention1989
parity-

decay modeintensity
β (β decay)100%

172Ho

mass number172
neutron number105
relative atomic mass
171.94473 ± 0.00021 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
25 ± 3 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1991
parity+

decay modeintensity
β (β decay)100%

173Ho

mass number173
neutron number106
relative atomic mass
172.94702 ± 0.00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
7.1 ± 0.4 s
spin7/2
nuclear quadrupole moment
time of discovery or invention2012
parity-

decay modeintensity
β (β decay)100%

174Ho

mass number174
neutron number107
relative atomic mass
173.950757 ± 0.000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.7 ± 0.4 s
spin8
nuclear quadrupole moment
time of discovery or invention2012
parity-

decay modeintensity
β (β decay)100%

175Ho

mass number175
neutron number108
relative atomic mass
174.953516 ± 0.000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.88 ± 0.55 s
spin7/2
nuclear quadrupole moment
time of discovery or invention2012
parity-

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

176Ho

mass number176
neutron number109
relative atomic mass
175.957713 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin4
nuclear quadrupole moment
time of discovery or invention2012
parity+

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

177Ho

mass number177
neutron number110
relative atomic mass
176.961052 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin7/2
nuclear quadrupole moment
time of discovery or invention2018
parity-

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

178Ho

mass number178
neutron number111
relative atomic mass
177.965507 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin2
nuclear quadrupole moment
time of discovery or invention2018
parity+

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

storja

discoverer or inventorJ.L. Soret
location of discoverySwitzerland
time of discovery or invention1878
etimoloġijaFrom Holmia, the Latinized name for Stockholm, Sweden.
pronunciationHOLE-mi-em (Ingliż)

source

Abundance
Abundance in Earth's crust
1.3 mg/kg
natural abundance (ocean)
0.00000022 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0.0000059 %
natural abundance (Xemx)
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