Hafnium

Hafnium (Hf)

element with the atomic number of 72
Atomic Number72
Atomic Weight178.49
Numri i masës180
Group4
Period6
Blockd
protoni72 p+
neutroni108 n0
elektroni72 e-
Animated Bohr model of Hf (Hafnium)

Tipar Fizik

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: Hafnium0153045607590105120135150165180195210225240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energjia
proton affinity
electron affinity
ionization energy
6,82507 eV/particle
ionization energy of Hf (Hafnium)
enthalpy of vaporization
575 kJ/mol
enthalpy of fusion
25,1 kJ/mol
standard enthalpy of formation
618,4 kJ/mol
elektroni
electron shell2, 8, 18, 32, 10, 2
Bohr model: Hf (Hafnium)
valence electron2
Lewis structure: Hf (Hafnium)
konfigurimi i elektronit[Xe] 4f14 5d2 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d2 6s2
Enhanced Bohr model of Hf (Hafnium)
Orbital Diagram of Hf (Hafnium)
oxidation number-2, 0, 1, 2, 3, 4
Elektronegativiteti
1.3
Electrophilicity Index
0,8583981383413326 eV/particle
fundamental state of matter
gjendja agregate e materiesSolid
gaseous state of matter
Boiling Point
4 873,15 K
Melting Point
2 506,15 K
critical pressure
critical temperature
triple point
appearance
Ngjyra
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
Superpërcjellshmëria
0,128 K
Magnetizimi
typeparamagnetic
magnetic susceptibility (Mass)
0,0000000053 m³/Kg
magnetic susceptibility (Molar)
0,000000000946 m³/mol
magnetic susceptibility (Volume)
0,0000705
magnetic ordering
Curie temperature
Néel temperature
strukturë
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
Shpejtësia e zërit
3 010 m/s
klasifikim
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
numër kuantik3F2
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

Numri i masës153
numri i neutroneve81
relative atomic mass
152,970692 ± 0,000322 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes2000
parity+

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

154Hf

Numri i masës154
numri i neutroneve82
relative atomic mass
153,964863 ± 0,000322 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2 ± 1 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1981
parity+

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

155Hf

Numri i masës155
numri i neutroneve83
relative atomic mass
154,963167 ± 0,000322 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
843 ± 30 ms
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1981
parity-

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

156Hf

Numri i masës156
numri i neutroneve84
relative atomic mass
155,959399083 ± 0,000160752 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
23 ± 1 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1979
parity+

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

157Hf

Numri i masës157
numri i neutroneve85
relative atomic mass
156,958288 ± 0,000215 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
115 ± 1 ms
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1965
parity-

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

158Hf

Numri i masës158
numri i neutroneve86
relative atomic mass
157,954801217 ± 0,00001878 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,85 ± 0,07 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1965
parity+

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

159Hf

Numri i masës159
numri i neutroneve87
relative atomic mass
158,953995837 ± 0,000018049 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
5,2 ± 0,1 s
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity-

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

160Hf

Numri i masës160
numri i neutroneve88
relative atomic mass
159,950682728 ± 0,000010241 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
13,6 ± 0,2 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1973
parity+

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

161Hf

Numri i masës161
numri i neutroneve89
relative atomic mass
160,950277927 ± 0,000025174 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
18,4 ± 0,4 s
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1973
parity-

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

162Hf

Numri i masës162
numri i neutroneve90
relative atomic mass
161,947215526 ± 0,00000961 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
39,4 ± 0,9 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1982
parity+

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

163Hf

Numri i masës163
numri i neutroneve91
relative atomic mass
162,947107211 ± 0,000027582 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
40 ± 0,6 s
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1982
parity-

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

164Hf

Numri i masës164
numri i neutroneve92
relative atomic mass
163,944370709 ± 0,000016975 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
111 ± 8 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1981
parity+

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

165Hf

Numri i masës165
numri i neutroneve93
relative atomic mass
164,944567 ± 0,00003 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
76 ± 4 s
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1981
parity-

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

166Hf

Numri i masës166
numri i neutroneve94
relative atomic mass
165,94218 ± 0,00003 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
6,77 ± 0,3 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1965
parity+

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

167Hf

Numri i masës167
numri i neutroneve95
relative atomic mass
166,9426 ± 0,00003 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,05 ± 0,05 m
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1969
parity

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

168Hf

Numri i masës168
numri i neutroneve96
relative atomic mass
167,940568 ± 0,00003 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
25,95 ± 0,2 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1961
parity+

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

169Hf

Numri i masës169
numri i neutroneve97
relative atomic mass
168,941259 ± 0,00003 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
3,24 ± 0,04 m
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1969
parity-

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

170Hf

Numri i masës170
numri i neutroneve98
relative atomic mass
169,939609 ± 0,00003 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
16,01 ± 0,13 h
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1961
parity+

decay modeintensitet
ϵ (electron capture)100%

171Hf

Numri i masës171
numri i neutroneve99
relative atomic mass
170,940492 ± 0,000031 Da
g-factor
-0,19257142857143 ± 0,0034285714285714
natural abundance
Radioaktivitet☢️ radioactive element
half-life
12,1 ± 0,4 h
Spini7/2
nuclear quadrupole moment
3,46 ± 0,03
koha e zbulimit apo shpikjes1951
parity+

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

172Hf

Numri i masës172
numri i neutroneve100
relative atomic mass
171,939449716 ± 0,000026224 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1,87 ± 0,03 y
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1951
parity+

decay modeintensitet
ϵ (electron capture)100%

173Hf

Numri i masës173
numri i neutroneve101
relative atomic mass
172,940513 ± 0,00003 Da
g-factor
1,004 ± 0,014
natural abundance
Radioaktivitet☢️ radioactive element
half-life
23,6 ± 0,1 h
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1951
parity-

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

174Hf

Numri i masës174
numri i neutroneve102
relative atomic mass
173,940048377 ± 0,000002425 Da
g-factor
0
natural abundance
0,16 ± 0,12
Radioaktivitet☢️ radioactive element
half-life
2 ± 0,4 Py
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1939
parity+

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

175Hf

Numri i masës175
numri i neutroneve103
relative atomic mass
174,941511424 ± 0,00000245 Da
g-factor
-0,2708 ± 0,0036
natural abundance
Radioaktivitet☢️ radioactive element
half-life
70,65 ± 0,19 d
Spini5/2
nuclear quadrupole moment
2,72 ± 0,02
koha e zbulimit apo shpikjes1949
parity-

decay modeintensitet
ϵ (electron capture)100%

176Hf

Numri i masës176
numri i neutroneve104
relative atomic mass
175,941409797 ± 0,000001591 Da
g-factor
0
natural abundance
5,26 ± 0,7
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1934
parity+

177Hf

Numri i masës177
numri i neutroneve105
relative atomic mass
176,943230187 ± 0,000001514 Da
g-factor
0,226 ± 0,00025714285714286
natural abundance
18,6 ± 0,16
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini7/2
nuclear quadrupole moment
3,37 ± 0,03
koha e zbulimit apo shpikjes1934
parity-

178Hf

Numri i masës178
numri i neutroneve106
relative atomic mass
177,943708322 ± 0,000001519 Da
g-factor
0
natural abundance
27,28 ± 0,28
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1934
parity+

179Hf

Numri i masës179
numri i neutroneve107
relative atomic mass
178,945825705 ± 0,00000152 Da
g-factor
-0,14197777777778 ± 0,00031111111111111
natural abundance
13,62 ± 0,11
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini9/2
nuclear quadrupole moment
3,79 ± 0,03
koha e zbulimit apo shpikjes1934
parity+

180Hf

Numri i masës180
numri i neutroneve108
relative atomic mass
179,946559537 ± 0,000001525 Da
g-factor
0
natural abundance
35,08 ± 0,33
Radioaktivitetstable isotope
half-lifeNot Radioactive ☢️
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1934
parity+

181Hf

Numri i masës181
numri i neutroneve109
relative atomic mass
180,949110834 ± 0,000001527 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
42,39 ± 0,06 d
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1935
parity-

decay modeintensitet
β (β decay)100%

182Hf

Numri i masës182
numri i neutroneve110
relative atomic mass
181,950563684 ± 0,000006619 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
8,9 ± 0,09 My
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1961
parity+

decay modeintensitet
β (β decay)100%

183Hf

Numri i masës183
numri i neutroneve111
relative atomic mass
182,953533203 ± 0,000032251 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
1,018 ± 0,002 h
Spini3/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1956
parity-

decay modeintensitet
β (β decay)100%

184Hf

Numri i masës184
numri i neutroneve112
relative atomic mass
183,955448507 ± 0,000042625 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
4,12 ± 0,05 h
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1973
parity+

decay modeintensitet
β (β decay)100%

185Hf

Numri i masës185
numri i neutroneve113
relative atomic mass
184,958862 ± 0,000069 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
3,5 ± 0,6 m
Spini9/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1993
parity-

decay modeintensitet
β (β decay)100%

186Hf

Numri i masës186
numri i neutroneve114
relative atomic mass
185,960897 ± 0,000055 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,6 ± 1,2 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1998
parity+

decay modeintensitet
β (β decay)100%

187Hf

Numri i masës187
numri i neutroneve115
relative atomic mass
186,964573 ± 0,000215 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini9/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1999
parity-

decay modeintensitet
β (β decay)

188Hf

Numri i masës188
numri i neutroneve116
relative atomic mass
187,966903 ± 0,000322 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1999
parity+

decay modeintensitet
β (β decay)

189Hf

Numri i masës189
numri i neutroneve117
relative atomic mass
188,970853 ± 0,000322 Da
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini3/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes2009
parity-

decay modeintensitet
β (β decay)100%

190Hf

Numri i masës190
numri i neutroneve118
relative atomic mass
189,973376 ± 0,000429 Da
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes2012
parity+

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

historia

zbuluesDirk Coster, Georg von Hevesy
vendndodhja e zbulimitDenmark
koha e zbulimit apo shpikjes1923
EtimologjiaFrom Hafnia, the Latin name of Copenhagen.
pronunciationHAF-ni-em (anglisht)

burim

Abundance
Abundance in Earth's crust
natural abundance (Oqeani)
0,000007 mg/L
natural abundance (Trupi i njeriut)
natural abundance (meteoroid)
0,000017 %
natural abundance (Diell)
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