Atomic Number | 103 |
---|---|
Atomic Weight | 262 |
Mass Number | 251 |
Group | |
---|---|
Period | 7 |
Block | f |
Protons | 103 p+ |
---|---|
Neutrons | 148 n0 |
Electrons | 103 e- |
Atomic Radius | |
---|---|
Molar Volume | |
Covalent Radius | 161 pm
|
Metallic Radius | |
Ionic Radius | 107.4 pm
|
Crystal Radius | 121.4 pm
|
Van der Waals Radius |
246 pm
|
Density | 15.6 g/cm³
|
Energy | |
Proton Affinity | |
Electron Affinity | |
Ionization Energy | 4.9 eV/particle
|
Heat of Vaporization | |
Heat of Fusion | |
Heat of Formation | |
Electrons | |
Electron Shells | 2, 8, 18, 32, 32, 8, 3 |
Valence Electrons | 3 |
Electron Configuration | [Rn] 5f14 7s2 7p1 |
Oxidation States | 3 |
Electronegativity | |
Electrophilicity | |
Phases | |
Phase | Solid |
Gas Phase | |
Boiling Point | |
Melting Point | 1,900.15 K
|
Critical Pressure | |
Critical Temperature | |
Triple Point | |
Visual | |
Color | Colorless
|
Appearance | |
Refractive Index | |
Thermodynamic Properties | |
Thermal Conductivity | |
Thermal Expansion | |
Molar Heat Capacity | |
Specific Heat Capacity | |
Heat Capacity Ratio (Adiabatic Index) | |
Electrical Properties | |
Type | |
Electrical Conductivity | |
Electrical Resistivity | |
Superconducting Point | |
Magnetism | |
Type | |
Magnetic Susceptibility (Mass) | |
Magnetic Susceptibility (Molar) | |
Magnetic Susceptibility (Volume) | |
Magnetic Ordering | |
Curie Point | |
Neel Point | |
Structure | |
Crystal Structure | () |
Lattice Constant | |
Lattice Angles | |
Mechanical Properties | |
Hardness | |
Bulk Modulus | |
Shear Modulus | |
Young Modulus | |
Poisson Ratio | |
Speed of Sound | |
Classification | |
Category | Actinides, Transition metals |
CAS Group | |
IUPAC Group | |
Glawe Number | 47 |
Mendeleev Number | 42 |
Pettifor Number | 34 |
Geochemical Class | |
Goldschmidt Class | synthetic |
Other | |
Gas Basicity | |
Dipole Polarizability | |
C6 Dispersion Coefficient | |
Allotropes | |
Neutron Cross Section | |
Neutron Mass Absorption | |
Quantum Numbers | 2P1/2 |
Space Group | () |
Stable Isotopes | 0 |
---|---|
Unstable Isotopes | 16 |
Radioactive Isotopes | 16 |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 251 |
G-Factor | |
Half Life | |
Spin | |
Quadrupole Moment | |
Discovery Year | |
Parity |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | % |
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 252 |
G-Factor | |
Half Life | 369 ± 75 ms
|
Spin | 7 |
Quadrupole Moment | |
Discovery Year | 2001 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 98% |
SF (spontaneous fission) | 2% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 253 |
G-Factor | |
Half Life | 632 ± 46 ms
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 1985 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 90% |
SF (spontaneous fission) | 1% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 254 |
G-Factor | |
Half Life | 12 ± 0.9 s
|
Spin | 4 |
Quadrupole Moment | |
Discovery Year | 1981 |
Parity | + |
Decay Mode | Intensity |
---|---|
α (α emission) | 71.7% |
β+ (β+ decay; β+ = ϵ + e+) | 28.3% |
SF (spontaneous fission) | 0.1% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 255 |
G-Factor | |
Half Life | 31.1 ± 1.1 s
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1971 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 99.7% |
β+ (β+ decay; β+ = ϵ + e+) | 0.3% |
SF (spontaneous fission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 256 |
G-Factor | 0
|
Half Life | 27.9 ± 1 s
|
Spin | 0 |
Quadrupole Moment | 0
|
Discovery Year | 1965 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 85% |
β+ (β+ decay; β+ = ϵ + e+) | 15% |
SF (spontaneous fission) | 0.03% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 257 |
G-Factor | |
Half Life | 6 ± 0.4 s
|
Spin | 7/2 |
Quadrupole Moment | |
Discovery Year | 1971 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 100% |
β+ (β+ decay; β+ = ϵ + e+) | % |
SF (spontaneous fission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 258 |
G-Factor | |
Half Life | 3.92 ± 0.33 s
|
Spin | |
Quadrupole Moment | |
Discovery Year | 1971 |
Parity |
Decay Mode | Intensity |
---|---|
α (α emission) | 97.4% |
β+ (β+ decay; β+ = ϵ + e+) | 2.6% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 259 |
G-Factor | |
Half Life | 6.2 ± 0.3 s
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1971 |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | 78% |
SF (spontaneous fission) | 22% |
β+ (β+ decay; β+ = ϵ + e+) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 260 |
G-Factor | |
Half Life | 3 ± 0.5 m
|
Spin | |
Quadrupole Moment | |
Discovery Year | 1971 |
Parity |
Decay Mode | Intensity |
---|---|
α (α emission) | 80% |
β+ (β+ decay; β+ = ϵ + e+) | 20% |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 261 |
G-Factor | |
Half Life | 39 ± 12 m
|
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | 1987 |
Parity | - |
Decay Mode | Intensity |
---|---|
SF (spontaneous fission) | 100% |
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 262 |
G-Factor | |
Half Life | |
Spin | |
Quadrupole Moment | |
Discovery Year | 1987 |
Parity |
Decay Mode | Intensity |
---|---|
β+ (β+ decay; β+ = ϵ + e+) | % |
SF (spontaneous fission) | 10% |
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 263 |
G-Factor | |
Half Life | |
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 264 |
G-Factor | |
Half Life | |
Spin | |
Quadrupole Moment | |
Discovery Year | |
Parity |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
SF (spontaneous fission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 265 |
G-Factor | |
Half Life | |
Spin | 1/2 |
Quadrupole Moment | 0
|
Discovery Year | |
Parity | - |
Decay Mode | Intensity |
---|---|
α (α emission) | % |
SF (spontaneous fission) | % |
Abundance | Radioactive ☢️ |
---|---|
Relative Atomic Mass | |
Mass Number | 266 |
G-Factor | |
Half Life | 22 ± 14 h
|
Spin | |
Quadrupole Moment | |
Discovery Year | 2014 |
Parity |
Decay Mode | Intensity |
---|---|
SF (spontaneous fission) | 100% |
Lawrencium was discovered by Albert Ghiorso, Torbjørn Sikkeland, Almon Larsh and Robert M. Latimer in 1961 at the University of California, Berkeley. It was produced by the bombardment of californium with boron atoms. Lawrencium was the last member of the actinide series to be discovered. Named after Ernest O. Lawrence, inventor of the cyclotron
Discoverers | A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer |
---|---|
Discovery Location | United States |
Discovery Year | 1961 |
Etymology (Name Origin) | Named in honor of Ernest O. Lawrence, inventor of the cyclotron. |
Pronunciation | lor-ENS-i-em (English) |
Produced by bombarding californium with boron ions.
Abundance | |
---|---|
Abundance in Earth's crust | |
Abundance in Oceans | |
Abundance in Human Body | 0 %
|
Abundance in Meteor | 0 %
|
Abundance in Sun | 0 %
|
Abundance in Universe | 0 %
|