Lutetium (Lu)
Lutetium is the 71st element in the periodic table and has a symbol of Lu and atomic number of 71. It has an atomic weight of 174.9668 and a mass number of 175. Lutetium has seventy-one protons and one hundred four neutrons in its nucleus, and seventy-one electrons in six shells. It is located in group Transition metals, period six and block f of the periodic table. Silvery-white rare-earth metal which is relatively stable in air. It happens to be the most expensive rare-earth metal. Its found with almost all rare-earth metals, but is very difficult to separate from other elements. Least abundant of all natural elements. Used in metal alloys, and as a catalyst in various processes. There are two natural, stable isotopes, and seven radioisotopes, the most stable being Lu-174 with a half-life of 3.3 years. The separation of lutetium from Ytterbium was described by Georges Urbain in 1907. It was discovered at approximately the same time by Carl Auer von Welsbach. The name comes from the Greek word lutetia which means Paris.
| Atomic Number | 71 |
|---|---|
| Atomic Weight | 174.9668 |
| Mass Number | 175 |
| Group | |
|---|---|
| Period | 6 |
| Block | f |
| Protons | 71 p+ |
|---|---|
| Neutrons | 104 n0 |
| Electrons | 71 e- |
Physical Properties
| Atomic Radius | |
|---|---|
| Molar Volume | |
| Covalent Radius | |
| Metallic Radius | |
| Ionic Radius | |
| Crystal Radius | |
| Van der Waals Radius | |
| Density |
Chemical Properties
| Energy | |
|---|---|
| Proton Affinity | |
| Electron Affinity | |
| Ionization Energy | |
| Heat of Vaporization | |
| Heat of Fusion | |
| Heat of Formation | |
| Electrons | |
| Electron Shells | 2, 8, 18, 32, 9, 2 |
 | |
| Valence Electrons | 2 ⓘ |
 | |
| Electron Configuration | [Xe] 4f14 5d1 6s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d1 6s2 |
  | |
| Oxidation States | 0, 2, 3 |
| Electronegativity |
1
|
| Electrophilicity Index | |
| States of Matter | |
| Phase | Solid |
| Gas Phase | |
| Boiling Point | |
| Melting Point | |
| Critical Pressure | |
| Critical Temperature | |
| Triple Point | |
| Visual | |
Lutetium is a Silver. Lu has a CPK of #ff1493, Jmol of #00ab24, and MOLCAS GV of #00ab24. The Appearance of Element 71 is silvery white. | |
| Color | Silver
|
| Appearance | silvery white |
| Refractive Index | |
| Thermodynamic Properties | |
| Thermal Conductivity | |
| Thermal Expansion | |
| Molar Heat Capacity | |
| Specific Heat Capacity | |
| Heat Capacity Ratio (Adiabatic Index) | |
| Electrical Properties | |
| Type | Conductor |
| Electrical Conductivity | |
| Electrical Resistivity | |
| Superconducting Point | |
| Magnetism | |
| Type | paramagnetic |
| Magnetic Susceptibility (Mass) | 0.0000000012 m³/Kg
|
| Magnetic Susceptibility (Molar) | 0.00000000021 m³/mol
|
| Magnetic Susceptibility (Volume) | 0.0000118
|
| Magnetic Ordering | |
| Curie Point | |
| Neel Point | |
| Structure | |
The Crystal Structure of Lutetium is HEX. The lattice constant of Lu is 3.51 Å. The lattice angles of Element 71 are π/2, π/2, 2 π/3. | |
| Crystal Structure | Simple Hexagonal (HEX) |
| Lattice Constant | |
| Lattice Angles | π/2, π/2, 2 π/3 |
| Mechanical Properties | |
Lutetium has a Brinell of 893 MPa, and Vickers of 1160 MPa. The Bulk Modulus of Lu is 48 GPa. The Shear Modulus of Element 71 is 27 GPa. The Young Modulus of Lutetium (Lu) is 69 GPa. The Poisson Ratio of Lutetium is 0.26. | |
| Hardness | |
| Bulk Modulus | |
| Shear Modulus | |
| Young's Modulus | |
| Poisson Ratio | 0.26
|
| Speed of Sound | |
| Classification | |
The Glawe Number of Lutetium is 19. The Mendeleev Number of Lu is 41. The Pettifor Number of Element 71 is 21. The Geochemical Class of Lutetium (Lu) is rare earth & related. The Goldschmidt Class of Lutetium is litophile. | |
| Category | Lanthanides, Transition metals |
| CAS Group | |
| IUPAC Group | |
| Glawe Number | 19 |
| Mendeleev Number | 41 |
| Pettifor Number | 21 |
| Geochemical Class | rare earth & related |
| Goldschmidt Class | litophile |
Other
The Gas Basicity of Lutetium is 970.6 kJ/mol. The Dipole Polarizability of Lu is 137 plus or minus 7 a₀. Element 71 has a C6 Dispersion Coefficient (GB) of 2020 a₀. The Allotropes of Lutetium (Lu) is . The Neutron Cross Section of Lutetium is 85. The Neutron Mass Absorption of Lu is 0.022. The Quantum Numbers of Element 71 is 2D3/2. The Space Group of Lutetium (Lu) is 194 (P63/mmc).
| Gas Basicity | |
|---|---|
| Dipole Polarizability | |
| C6 Dispersion Coefficient | |
| Allotropes | |
| Neutron Cross Section | 85
|
| Neutron Mass Absorption | 0.022
|
| Quantum Numbers | 2D3/2 |
| Space Group | 194 (P63/mmc) |
Isotopes of Lutetium
| Stable Isotopes | 1 |
|---|---|
| Unstable Isotopes | 38 |
| Natural Isotopes | 2 |
150Lu
| Mass Number | 150 |
|---|---|
| Neutron Number | 79 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 45 ± 3 ms
|
| Spin | 5 |
| Quadrupole Moment | |
| Discovery Year | 1993 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| p (proton emission) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) |
151Lu
| Mass Number | 151 |
|---|---|
| Neutron Number | 80 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 78.4 ± 0.9 ms
|
| Spin | 11/2 |
| Quadrupole Moment | |
| Discovery Year | 1982 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| p (proton emission) | |
| β+ (β+ decay; β+ = ϵ + e+) |
152Lu
| Mass Number | 152 |
|---|---|
| Neutron Number | 81 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 650 ± 70 ms
|
| Spin | 4 |
| Quadrupole Moment | |
| Discovery Year | 1987 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| β+ p (β+-delayed proton emission) | 15% |
153Lu
| Mass Number | 153 |
|---|---|
| Neutron Number | 82 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 900 ± 200 ms
|
| Spin | 11/2 |
| Quadrupole Moment | |
| Discovery Year | 1989 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | |
| β+ (β+ decay; β+ = ϵ + e+) | |
| p (proton emission) | 0% |
154Lu
| Mass Number | 154 |
|---|---|
| Neutron Number | 83 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1981 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | |
| α (α emission) |
155Lu
| Mass Number | 155 |
|---|---|
| Neutron Number | 84 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 68 ± 2 ms
|
| Spin | 11/2 |
| Quadrupole Moment | |
| Discovery Year | 1965 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 90% |
| β+ (β+ decay; β+ = ϵ + e+) | 10% |
156Lu
| Mass Number | 156 |
|---|---|
| Neutron Number | 85 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 494 ± 12 ms
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1965 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| α (α emission) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) |
157Lu
| Mass Number | 157 |
|---|---|
| Neutron Number | 86 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 7.7 ± 2 s
|
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | 1977 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | |
| α (α emission) |
158Lu
| Mass Number | 158 |
|---|---|
| Neutron Number | 87 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 10.6 ± 0.3 s
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1979 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 99.09% |
| α (α emission) | 0.91% |
159Lu
| Mass Number | 159 |
|---|---|
| Neutron Number | 88 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 12.1 ± 1 s
|
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | 1980 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| α (α emission) |
160Lu
| Mass Number | 160 |
|---|---|
| Neutron Number | 89 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 36.1 ± 0.3 s
|
| Spin | 2 |
| Quadrupole Moment | |
| Discovery Year | 1979 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| α (α emission) |
161Lu
| Mass Number | 161 |
|---|---|
| Neutron Number | 90 |
| Relative Atomic Mass | |
| G-Factor | 0.444 ± 0.006
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 77 ± 2 s
|
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | 1973 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
162Lu
| Mass Number | 162 |
|---|---|
| Neutron Number | 91 |
| Relative Atomic Mass | |
| G-Factor | 0.0551 ± 0.0011
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 1.37 ± 0.02 m
|
| Spin | 1 |
| Quadrupole Moment | 0.519 ± 0.008
|
| Discovery Year | 1978 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
163Lu
| Mass Number | 163 |
|---|---|
| Neutron Number | 92 |
| Relative Atomic Mass | |
| G-Factor | 0.1534 ± 0.002
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 3.97 ± 0.13 m
|
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | 1979 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
164Lu
| Mass Number | 164 |
|---|---|
| Neutron Number | 93 |
| Relative Atomic Mass | |
| G-Factor | 0.0589 ± 0.0011
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 3.14 ± 0.03 m
|
| Spin | 1 |
| Quadrupole Moment | 0.608 ± 0.007
|
| Discovery Year | 1977 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
165Lu
| Mass Number | 165 |
|---|---|
| Neutron Number | 94 |
| Relative Atomic Mass | |
| G-Factor | -0.0488 ± 0.0006
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 10.74 ± 0.1 m
|
| Spin | 1/2 |
| Quadrupole Moment | 0
|
| Discovery Year | 1973 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
166Lu
| Mass Number | 166 |
|---|---|
| Neutron Number | 95 |
| Relative Atomic Mass | |
| G-Factor | 0.48383333333333 ± 0.002
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2.65 ± 0.1 m
|
| Spin | 6 |
| Quadrupole Moment | 4.33 ± 0.04
|
| Discovery Year | 1969 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
167Lu
| Mass Number | 167 |
|---|---|
| Neutron Number | 96 |
| Relative Atomic Mass | |
| G-Factor | 0.66228571428571 ± 0.0011428571428571
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 51.5 ± 1 m
|
| Spin | 7/2 |
| Quadrupole Moment | 3.28 ± 0.02
|
| Discovery Year | 1958 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
168Lu
| Mass Number | 168 |
|---|---|
| Neutron Number | 97 |
| Relative Atomic Mass | |
| G-Factor | 0.50116666666667 ± 0.0041666666666667
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 5.5 ± 0.1 m
|
| Spin | 6 |
| Quadrupole Moment | 4.77 ± 0.06
|
| Discovery Year | 1960 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
169Lu
| Mass Number | 169 |
|---|---|
| Neutron Number | 98 |
| Relative Atomic Mass | |
| G-Factor | 0.65371428571429 ± 0.0011428571428571
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 34.06 ± 0.05 h
|
| Spin | 7/2 |
| Quadrupole Moment | 3.48 ± 0.03
|
| Discovery Year | 1955 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
170Lu
| Mass Number | 170 |
|---|---|
| Neutron Number | 99 |
| Relative Atomic Mass | |
| G-Factor | 0
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2.012 ± 0.03 d
|
| Spin | 0 |
| Quadrupole Moment | 0
|
| Discovery Year | 1951 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
171Lu
| Mass Number | 171 |
|---|---|
| Neutron Number | 100 |
| Relative Atomic Mass | |
| G-Factor | 0.65314285714286 ± 0.0011428571428571
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 8.247 ± 0.023 d
|
| Spin | 7/2 |
| Quadrupole Moment | 3.53 ± 0.03
|
| Discovery Year | 1951 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
172Lu
| Mass Number | 172 |
|---|---|
| Neutron Number | 101 |
| Relative Atomic Mass | |
| G-Factor | 0.72275 ± 0.0025
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 6.7 ± 0.03 d
|
| Spin | 4 |
| Quadrupole Moment | 3.8 ± 0.04
|
| Discovery Year | 1951 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
173Lu
| Mass Number | 173 |
|---|---|
| Neutron Number | 102 |
| Relative Atomic Mass | |
| G-Factor | 0.64942857142857 ± 0.00057142857142857
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 1.37 ± 0.01 y
|
| Spin | 7/2 |
| Quadrupole Moment | 3.53 ± 0.02
|
| Discovery Year | 1951 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| ϵ (electron capture) | 100% |
174Lu
| Mass Number | 174 |
|---|---|
| Neutron Number | 103 |
| Relative Atomic Mass | |
| G-Factor | 1.982 ± 0.005
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 3.31 ± 0.05 y
|
| Spin | 1 |
| Quadrupole Moment | 0.773 ± 0.007
|
| Discovery Year | 1951 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
175Lu
| Mass Number | 175 |
|---|---|
| Neutron Number | 104 |
| Relative Atomic Mass | |
| G-Factor | 0.63591428571429 ± 0.00054285714285714
|
| Abundance | 97.401 ± 0.013
|
| Radioactivity | Stable |
| Half Life | Not Radioactive ☢️ |
| Spin | 7/2 |
| Quadrupole Moment | 3.49 ± 0.02
|
| Discovery Year | 1934 |
| Parity | + |
176Lu
| Mass Number | 176 |
|---|---|
| Neutron Number | 105 |
| Relative Atomic Mass | |
| G-Factor | 0.45142857142857 ± 0.00071428571428571
|
| Abundance | 2.599 ± 0.013
|
| Radioactivity | ☢️ Radioactive |
| Half Life | 37.01 ± 0.17 Gy
|
| Spin | 7 |
| Quadrupole Moment | |
| Discovery Year | 1935 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) | 0.45% |
177Lu
| Mass Number | 177 |
|---|---|
| Neutron Number | 106 |
| Relative Atomic Mass | |
| G-Factor | 0.63757142857143 ± 0.0004
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 6.6443 ± 0.0009 d
|
| Spin | 7/2 |
| Quadrupole Moment | 3.39 ± 0.03
|
| Discovery Year | 1945 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
178Lu
| Mass Number | 178 |
|---|---|
| Neutron Number | 107 |
| Relative Atomic Mass | |
| G-Factor | -1.373 ± 0.009
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 28.4 ± 0.2 m
|
| Spin | 1 |
| Quadrupole Moment | 0.708 ± 0.01
|
| Discovery Year | 1957 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
179Lu
| Mass Number | 179 |
|---|---|
| Neutron Number | 108 |
| Relative Atomic Mass | |
| G-Factor | 0.67657142857143 ± 0.0034285714285714
|
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 4.59 ± 0.06 h
|
| Spin | 7/2 |
| Quadrupole Moment | 3.32 ± 0.03
|
| Discovery Year | 1961 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
180Lu
| Mass Number | 180 |
|---|---|
| Neutron Number | 109 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 5.7 ± 0.1 m
|
| Spin | 5 |
| Quadrupole Moment | |
| Discovery Year | 1971 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
181Lu
| Mass Number | 181 |
|---|---|
| Neutron Number | 110 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 3.5 ± 0.3 m
|
| Spin | 7/2 |
| Quadrupole Moment | |
| Discovery Year | 1982 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
182Lu
| Mass Number | 182 |
|---|---|
| Neutron Number | 111 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 2 ± 0.2 m
|
| Spin | 1 |
| Quadrupole Moment | |
| Discovery Year | 1982 |
| Parity | - |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
183Lu
| Mass Number | 183 |
|---|---|
| Neutron Number | 112 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 58 ± 4 s
|
| Spin | 7/2 |
| Quadrupole Moment | |
| Discovery Year | 1983 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
184Lu
| Mass Number | 184 |
|---|---|
| Neutron Number | 113 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | 20 ± 3 s
|
| Spin | 3 |
| Quadrupole Moment | |
| Discovery Year | 1989 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | 100% |
185Lu
| Mass Number | 185 |
|---|---|
| Neutron Number | 114 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 7/2 |
| Quadrupole Moment | |
| Discovery Year | 2009 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) |
186Lu
| Mass Number | 186 |
|---|---|
| Neutron Number | 115 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2012 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | |
| β− n (β−-delayed neutron emission) |
187Lu
| Mass Number | 187 |
|---|---|
| Neutron Number | 116 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | 7/2 |
| Quadrupole Moment | |
| Discovery Year | 2012 |
| Parity | + |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) |
188Lu
| Mass Number | 188 |
|---|---|
| Neutron Number | 117 |
| Relative Atomic Mass | |
| G-Factor | |
| Abundance | |
| Radioactivity | ☢️ Radioactive |
| Half Life | |
| Spin | |
| Quadrupole Moment | |
| Discovery Year | 2012 |
| Parity |
| Decay Mode | Intensity |
|---|---|
| β− (β− decay) | |
| β− n (β−-delayed neutron emission) |
History
French chemist Georges Urbain successfully separated lutetium from ytterbia in 1907 in Paris. Austrian scientist Carl Auer von Welsbach and American chemist Charles James also succeeded in isolating lutetium independently in the same year. Pure lutetium metal was first produced in 1953. Lutetia is the ancient name for Paris
| Discoverers | Georges Urbain |
|---|---|
| Discovery Location | France |
| Discovery Year | 1907 |
| Etymology (Name Origin) | Named for the ancient name of Paris, Lutecia. |
| Pronunciation | loo-TEE-shi-em (English) |
Lutetium is considered to be non toxic
Lutetium was the last natural rare earth element to be discovered
Uses
Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry. Lutetium aluminum garnet has been proposed for use as a lens material in high refractive index immersion lithography. Lutetium is used as a phosphor in LED light bulbs. It has no practical applications.
Sources
Found with ytterbium in gadolinite and xenotime. Usually obtained from monazite sand which is ofter 50% rare earth by weight and 0.003% lutetium.
| Abundance | |
|---|---|
| Abundance in Earth's crust | |
| Natural Abundance (Oceans) | |
| Natural Abundance (Human Body) | |
| Natural Abundance (Meteor) | 0.0000029 %
|
| Natural Abundance (Sun) | 0.0000001 %
|
| Abundance in Universe | 0.00000001 %
|
Nuclear Screening Constants
| 1 | s | 1.3805 |
| 2 | p | 4.389 |
| 2 | s | 18.5502 |
| 3 | d | 13.5812 |
| 3 | p | 20.8337 |
| 3 | s | 21.4655 |
| 4 | d | 35.7108 |
| 4 | f | 40.0688 |
| 4 | p | 33.8096 |
| 4 | s | 32.7308 |
| 5 | d | 50.887 |
| 5 | p | 52.32 |
| 5 | s | 50.045 |
| 6 | s | 62.1956 |
Also Known As
- Lu
- element 71
- 71Lu
- cassiopium
- lutecium
Translations
- Frenchlutécium
- Norwegian Bokmållutetium
- GermanLutetium
- Afrikaanslutetium
- Amharicሉቴቲየም
- Arabicلوتيشيوم
- AzerbaijaniLutesium
- Belarusianлютэцый
- Bulgarianлутеций
- Banglaলুটিশিয়াম
- Bosnianlutecij
- Catalanluteci
- CorsicanLuteziu
- Czechlutecium
- ChuvashЛютеци
- WelshLwtetiwm
- Danishlutetium
- Greekλουτήτιο
- Esperantolutecio
- Spanishlutecio
- Estonianluteetsium
- Basquelutezio
- Persianلوتتیم
- Finnishlutetium
- FriulianLutezi
- Irishlúitéitiam
- Galicianlutecio
- ManxLootaiçhum
- Hakka Chineselutetium
- Hebrewלוטציום
- Hindiलुटीशियम
- Fiji HindiLutetium
- Croatianlutecij
- Haitian CreoleLitesyòm
- Hungarianlutécium
- Armenianլուտեցիում
- Interlingualutetium
- Indonesianlutesium
- Idolutecio
- Icelandiclútetín
- Italianlutezio
- Japaneseルテチウム
- Lojbanjinmrluteti
- JavaneseLutetium
- Georgianლუტეციუმი
- Kannadaಲ್ಯುಟೇಶಿಯಮ್
- Korean루테튬
- KurdishLutesyûm
- KomiЛютеций
- Latinlutetium
- LuxembourgishLutetium
- LigurianLutesio
- Lithuanianlutecis
- Latvianlutēcijs
- Malayalamലുറ്റീഷ്യം
- Marathiलुटेटियम
- Western MariЛӱтеций
- MalayLutetium
- Dutchlutetium
- Norwegian Nynorsklutetium
- Polishlutet
- Western Panjabiلتیتیم
- Portugueselutécio
- QuechuaLutesyu
- Romanianlutețiu
- Russianлютеций
- YakutЛютециум
- Sicilianlutezziu
- Serbo-CroatianLutecijum
- Slovaklutécium
- Slovenianlutecij
- Serbianлутецијум
- Saterland FrisianLutetium
- Swedishlutetium
- Thaiลูทีเทียม
- Turkishlutesyum
- Uyghurلۇتېتسىي
- Ukrainianлютецій
- Urduلوٹیٹیئم
- VepsLütecii
- Vietnameseluteti
- WarayLutesyo
- KalmykЛютециум
- YorubaLutetium
- Chinese镥
- BretonLutesiom
- CebuanoLutesyo
- Macedonianлутециум
- Central Kurdishلووتیشیۆم
- Gujaratiલ્યુટેશિયમ
- Odiaଲ୍ୟୁଟେସିଅମ
- Punjabiਲੁਟੀਸ਼ੀਅਮ
- PiedmonteseLutessi
- TatarЛютеций
- Tamilலியுதேத்தியம்
- Scotslutetium
- SomaliLuteetiyaam
- KazakhЛютеций
- Cantonese鑥
- Belarusian (Taraskievica orthography)Лютэц
- AlbanianLutetiumi
- UzbekLyutetsiy
- AromanianLutețiu
- KyrgyzЛютеций
- Sanskritलुटेटियम
- Malteselutezju
- Bhojpuriलुटेटियम
- Nepaliलुटेटियम
- Paliलुटेटियम
- Newariलुटेटियम
- Scottish GaelicLutetium
- Teluguలుటీషియం
- cdoLutetium
- Min Nan ChineseLutetium
- FaroeseLutetium
- AsturianLuteciu
- LimburgishLutetium
- Portuguese (Brazil)lutécio
- Literary Chinese鑥
- Tajikлютеций
- Lingua Franca Novalutesio
- TagalogLutesyo
- kbpLʊtɛsɩyɔm
- Chinese (Traditional)鎦
- Chinese (Taiwan)鎦
- Northern FrisianLuteetsium
- oloL'utecii
- Mongolianлютеци
- Wu Chinese镥
- Burmeseလူတက်သီယမ်
- SardinianLutètziu
- SwahiliLuteti
- Moroccan Arabicلوطيسيوم
- Egyptian Arabicلوتيشيوم
- Pashtoلوتيتيوم
- CornishLutetiom
- BalineseLutésium
- BikolLutesyo
- OccitanLutèci
