Hafniyûm

Hafniyûm (Hf)

element with the atomic number of 72
Atomic Number72
Atomic Weight178.49
Hejmara baristeyî180
Group4
Period6
Blockd
Proton72 p+
Notron108 n0
Kareva72 e-
Animated Bohr model of Hf (Hafniyûm)

Physical Property

Atomic Radius
155 pm
molar volume
Covalent Radius
152 pm
Metallic Radius
144 pm
ionic radius
58 pm
Crystal Radius
72 pm
Van der Waals radius
223 pm
density
13,3 g/cm³
Atomic Radii Of The Elements: Hafniyûm0102030405060708090100110120130140150160170180190200210220230pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
6,82507 eV/particle
ionization energy of Hf (Hafniyûm)
enthalpy of vaporization
575 kJ/mol
enthalpy of fusion
25,1 kJ/mol
standard enthalpy of formation
618,4 kJ/mol
Kareva
electron shell2, 8, 18, 32, 10, 2
Bohr model: Hf (Hafniyûm)
valence electron2
Lewis structure: Hf (Hafniyûm)
electron configuration[Xe] 4f14 5d2 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d2 6s2
Enhanced Bohr model of Hf (Hafniyûm)
Orbital Diagram of Hf (Hafniyûm)
oxidation number-2, 0, 1, 2, 3, 4
electronegativity
1.3
Electrophilicity Index
0,8583981383413326 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
4.873,15 K
Melting Point
2.506,15 K
critical pressure
critical temperature
triple point
appearance
color
Gray
appearancesteel gray
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
0,0000059 1/K
molar heat capacity
25,73 J/(mol K)
Specific Heat Capacity
0,144 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
3,3 MS/m
electrical resistivity
0,0000003 m Ω
superconductivity
0,128 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000053 m³/Kg
magnetic susceptibility (Molar)
0,000000000946 m³/mol
magnetic susceptibility (Volume)
0,0000705
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3,2 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
5,5 MPa
bulk modulus
110 GPa
shear modulus
30 GPa
Young's modulus
78 GPa
Poisson's ratio
0,37
Leza dengê
3.010 m/s
classification
CategoryTransition metals, Transition metals
CAS GroupIVA
IUPAC GroupIVB
Glawe Number50
Mendeleev Number45
Pettifor Number50
Geochemical Classhigh field strength
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
103 ± 6 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
104
Neutron Mass Absorption
0,02
quantum number3F2
space group194 (P63/mmc)

Isotopes of Hafnium

Stable Isotopes5
Unstable Isotopes33
Natural Isotopes6
Isotopic Composition18035.08%18035.08%17827.28%17827.28%17718.60%17718.60%17913.62%17913.62%1765.26%1765.26%1740.16%1740.16%

153Hf

Hejmara baristeyî153
neutron number81
Giraniya atomê
152,970692 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2000
parity+

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

154Hf

Hejmara baristeyî154
neutron number82
Giraniya atomê
153,964863 ± 0,000322 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2 ± 1 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1981
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0%

155Hf

Hejmara baristeyî155
neutron number83
Giraniya atomê
154,963167 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
843 ± 30 ms
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1981
parity-

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

156Hf

Hejmara baristeyî156
neutron number84
Giraniya atomê
155,959399083 ± 0,000160752 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
23 ± 1 ms
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1979
parity+

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

157Hf

Hejmara baristeyî157
neutron number85
Giraniya atomê
156,958288 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
115 ± 1 ms
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1965
parity-

decay modeintensity
α (α emission)94%
β+ (β+ decay; β+ = ϵ + e+)14%

158Hf

Hejmara baristeyî158
neutron number86
Giraniya atomê
157,954801217 ± 0,00001878 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2,85 ± 0,07 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1965
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)55.7%
α (α emission)44.3%

159Hf

Hejmara baristeyî159
neutron number87
Giraniya atomê
158,953995837 ± 0,000018049 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,2 ± 0,1 s
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1973
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)65%
α (α emission)35%

160Hf

Hejmara baristeyî160
neutron number88
Giraniya atomê
159,950682728 ± 0,000010241 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
13,6 ± 0,2 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1973
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.3%
α (α emission)0.7%

161Hf

Hejmara baristeyî161
neutron number89
Giraniya atomê
160,950277927 ± 0,000025174 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
18,4 ± 0,4 s
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1973
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.71%
α (α emission)0.29%

162Hf

Hejmara baristeyî162
neutron number90
Giraniya atomê
161,947215526 ± 0,00000961 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
39,4 ± 0,9 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1982
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.992%
α (α emission)0.008%

163Hf

Hejmara baristeyî163
neutron number91
Giraniya atomê
162,947107211 ± 0,000027582 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 0,6 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1982
parity-

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

164Hf

Hejmara baristeyî164
neutron number92
Giraniya atomê
163,944370709 ± 0,000016975 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
111 ± 8 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1981
parity+

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

165Hf

Hejmara baristeyî165
neutron number93
Giraniya atomê
164,944567 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
76 ± 4 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1981
parity-

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

166Hf

Hejmara baristeyî166
neutron number94
Giraniya atomê
165,94218 ± 0,00003 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
6,77 ± 0,3 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1965
parity+

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

167Hf

Hejmara baristeyî167
neutron number95
Giraniya atomê
166,9426 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,05 ± 0,05 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1969
parity

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

168Hf

Hejmara baristeyî168
neutron number96
Giraniya atomê
167,940568 ± 0,00003 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
25,95 ± 0,2 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
ϵ (electron capture)98%
e+ (positron emission)2%

169Hf

Hejmara baristeyî169
neutron number97
Giraniya atomê
168,941259 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,24 ± 0,04 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1969
parity-

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

170Hf

Hejmara baristeyî170
neutron number98
Giraniya atomê
169,939609 ± 0,00003 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
16,01 ± 0,13 h
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
ϵ (electron capture)100%

171Hf

Hejmara baristeyî171
neutron number99
Giraniya atomê
170,940492 ± 0,000031 Da
g-factor
-0,19257142857143 ± 0,0034285714285714
natural abundance
radioactivity☢️ radioactive element
half-life
12,1 ± 0,4 h
spin7/2
nuclear quadrupole moment
3,46 ± 0,03
dema îcadkirinê yan keşfê1951
parity+

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

172Hf

Hejmara baristeyî172
neutron number100
Giraniya atomê
171,939449716 ± 0,000026224 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1,87 ± 0,03 y
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1951
parity+

decay modeintensity
ϵ (electron capture)100%

173Hf

Hejmara baristeyî173
neutron number101
Giraniya atomê
172,940513 ± 0,00003 Da
g-factor
1,004 ± 0,014
natural abundance
radioactivity☢️ radioactive element
half-life
23,6 ± 0,1 h
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1951
parity-

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

174Hf

Hejmara baristeyî174
neutron number102
Giraniya atomê
173,940048377 ± 0,000002425 Da
g-factor
0
natural abundance
0,16 ± 0,12
radioactivity☢️ radioactive element
half-life
2 ± 0,4 Py
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1939
parity+

decay modeintensity
α (α emission)100%
+ (double β+ decay)

175Hf

Hejmara baristeyî175
neutron number103
Giraniya atomê
174,941511424 ± 0,00000245 Da
g-factor
-0,2708 ± 0,0036
natural abundance
radioactivity☢️ radioactive element
half-life
70,65 ± 0,19 d
spin5/2
nuclear quadrupole moment
2,72 ± 0,02
dema îcadkirinê yan keşfê1949
parity-

decay modeintensity
ϵ (electron capture)100%

176Hf

Hejmara baristeyî176
neutron number104
Giraniya atomê
175,941409797 ± 0,000001591 Da
g-factor
0
natural abundance
5,26 ± 0,7
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1934
parity+

177Hf

Hejmara baristeyî177
neutron number105
Giraniya atomê
176,943230187 ± 0,000001514 Da
g-factor
0,226 ± 0,00025714285714286
natural abundance
18,6 ± 0,16
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
3,37 ± 0,03
dema îcadkirinê yan keşfê1934
parity-

178Hf

Hejmara baristeyî178
neutron number106
Giraniya atomê
177,943708322 ± 0,000001519 Da
g-factor
0
natural abundance
27,28 ± 0,28
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1934
parity+

179Hf

Hejmara baristeyî179
neutron number107
Giraniya atomê
178,945825705 ± 0,00000152 Da
g-factor
-0,14197777777778 ± 0,00031111111111111
natural abundance
13,62 ± 0,11
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin9/2
nuclear quadrupole moment
3,79 ± 0,03
dema îcadkirinê yan keşfê1934
parity+

180Hf

Hejmara baristeyî180
neutron number108
Giraniya atomê
179,946559537 ± 0,000001525 Da
g-factor
0
natural abundance
35,08 ± 0,33
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1934
parity+

181Hf

Hejmara baristeyî181
neutron number109
Giraniya atomê
180,949110834 ± 0,000001527 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
42,39 ± 0,06 d
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1935
parity-

decay modeintensity
β (β decay)100%

182Hf

Hejmara baristeyî182
neutron number110
Giraniya atomê
181,950563684 ± 0,000006619 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
8,9 ± 0,09 My
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
β (β decay)100%

183Hf

Hejmara baristeyî183
neutron number111
Giraniya atomê
182,953533203 ± 0,000032251 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,018 ± 0,002 h
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1956
parity-

decay modeintensity
β (β decay)100%

184Hf

Hejmara baristeyî184
neutron number112
Giraniya atomê
183,955448507 ± 0,000042625 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,12 ± 0,05 h
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1973
parity+

decay modeintensity
β (β decay)100%

185Hf

Hejmara baristeyî185
neutron number113
Giraniya atomê
184,958862 ± 0,000069 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,5 ± 0,6 m
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1993
parity-

decay modeintensity
β (β decay)100%

186Hf

Hejmara baristeyî186
neutron number114
Giraniya atomê
185,960897 ± 0,000055 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2,6 ± 1,2 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1998
parity+

decay modeintensity
β (β decay)100%

187Hf

Hejmara baristeyî187
neutron number115
Giraniya atomê
186,964573 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1999
parity-

decay modeintensity
β (β decay)

188Hf

Hejmara baristeyî188
neutron number116
Giraniya atomê
187,966903 ± 0,000322 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1999
parity+

decay modeintensity
β (β decay)

189Hf

Hejmara baristeyî189
neutron number117
Giraniya atomê
188,970853 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2009
parity-

decay modeintensity
β (β decay)100%

190Hf

Hejmara baristeyî190
neutron number118
Giraniya atomê
189,973376 ± 0,000429 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2012
parity+

decay modeintensity
β (β decay)
Hf-crystal bar
Hafnium

dîrok

kaşîf an îcadkerDirk Coster, Georg von Hevesy
location of discoveryDenmark
dema îcadkirinê yan keşfê1923
BêjenasîFrom Hafnia, the Latin name of Copenhagen.
pronunciationHAF-ni-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
0,000007 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0,000017 %
natural abundance (Roj)
0,0000001 %
Abundance in Universe
0,00000007 %

Nuclear Screening Constants

1s1.3984
2p4.4012
2s18.8102
3d13.5702
3p21.0168
3s21.6885
4d36.476
4f39.7904
4p34.0704
4s33.0228
5d55.3805
5p52.415
5s50.167
6s62.8356