| Atomic Number | 92 | 
|---|---|
| Atomic Weight | 238.02891 | 
| mass number | 238 | 
| Group | |
|---|---|
| Period | 7 | 
| Block | f | 
| proton | 92 p+ | 
|---|---|
| neutron | 146 n0 | 
| elettron | 92 e- | 
| Atomic Radius | |
|---|---|
| molar volume | |
| covalent radius | |
| Metallic Radius | |
| ionic radius | |
| Crystal Radius | |
| Van der Waals radius | |
| densità | 
| enerġija | |
|---|---|
| proton affinity | |
| electron affinity | |
| ionization energy | |
| enthalpy of vaporization | |
| enthalpy of fusion | |
| standard enthalpy of formation | |
| elettron | |
| electron shell | 2, 8, 18, 32, 21, 9, 2 | 
| valence electron | 2 ⓘ | 
| electron configuration | [Rn] 5f3 6d1 7s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f3 6d1 7s2 | 
| oxidation number | -1, 1, 2, 3, 4, 5, 6 | 
| electronegativity | 1.7 | 
| Electrophilicity Index | |
| fundamental state of matter | |
| phase of matter{ERROR} | |
| gaseous state of matter | |
| Boiling Point | |
| Melting Point | |
| critical pressure | |
| critical temperature | |
| triple point | |
| appearance | |
| kulur | Black | 
| appearance | |
| refractive index | |
| thermodynamic material property | |
| Thermal Conductivity | |
| thermal expansion | |
| molar heat capacity | |
| Specific Heat Capacity | |
| heat capacity ratio | |
| electrical properties | |
| type | Conductor | 
| electrical conductivity | |
| electrical resistivity | |
| superconductivity | |
| magnetism | |
| type | paramagnetic | 
| magnetic susceptibility (Mass) | 0.0000000216 m³/Kg | 
| magnetic susceptibility (Molar) | 0.00000000514 m³/mol | 
| magnetic susceptibility (Volume) | 0.000411  | 
| magnetic ordering | |
| Curie temperature | |
| Néel temperature | |
| structure | |
| Crystal Structure | {ERROR} | 
| lattice constant | |
| Lattice Angles | π/2, π/2, π/2 | 
| mechanical property | |
| hardness | |
| bulk modulus | |
| shear modulus | |
| Young's modulus | |
| Poisson's ratio | 0.23  | 
| speed of sound | |
| classification | |
| Category | Actinides, Actinides | 
| CAS Group | |
| IUPAC Group | |
| Glawe Number | 36 | 
| Mendeleev Number | 20 | 
| Pettifor Number | 45 | 
| Geochemical Class | rare earth & related | 
| Goldschmidt classification | litophile | 
| Gas Basicity | |
|---|---|
| polarizability | |
| C6 Dispersion Coefficient | |
| allotrope | |
| Neutron cross section | 7.57  | 
| Neutron Mass Absorption | 0.0005  | 
| quantum number | 5L6 | 
| space group | 63 (Cmcm) | 
| Stable Isotopes | 0 | 
|---|---|
| Unstable Isotopes | 29 | 
| Natural Isotopes | 3 | 
| mass number | 215 | 
|---|---|
| neutron number | 123 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 1.4 ± 0.9 ms | 
| spin | 5/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 2015 | 
| parity | - | 
| decay mode | intensity | 
|---|---|
| α (α emission) | |
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 216 | 
|---|---|
| neutron number | 124 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 6.9 ± 2.9 ms | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 2015 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| mass number | 217 | 
|---|---|
| neutron number | 125 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 850 ± 710 us | 
| spin | 1/2 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 2000 | 
| parity | - | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β− (β− decay) | 
| mass number | 218 | 
|---|---|
| neutron number | 126 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 354 ± 91 us | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1992 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| mass number | 219 | 
|---|---|
| neutron number | 127 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 60 ± 7 us | 
| spin | 9/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1993 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 220 | 
|---|---|
| neutron number | 128 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | |
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | |
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | |
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 221 | 
|---|---|
| neutron number | 129 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 660 ± 140 ns | 
| spin | 9/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 2015 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 222 | 
|---|---|
| neutron number | 130 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 4.7 ± 0.7 us | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1983 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 223 | 
|---|---|
| neutron number | 131 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 65 ± 12 us | 
| spin | 7/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1991 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 224 | 
|---|---|
| neutron number | 132 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 396 ± 17 us | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1991 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 225 | 
|---|---|
| neutron number | 133 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 62 ± 4 ms | 
| spin | 5/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1989 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| mass number | 226 | 
|---|---|
| neutron number | 134 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 269 ± 6 ms | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1973 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| mass number | 227 | 
|---|---|
| neutron number | 135 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 1.1 ± 0.1 m | 
| spin | 3/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1952 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| β+ (β+ decay; β+ = ϵ + e+) | 
| mass number | 228 | 
|---|---|
| neutron number | 136 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 9.1 ± 0.2 m | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1949 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 97.5% | 
| ϵ (electron capture) | 2.5% | 
| mass number | 229 | 
|---|---|
| neutron number | 137 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 57.8 ± 0.5 m | 
| spin | 3/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1949 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 80% | 
| α (α emission) | 20% | 
| mass number | 230 | 
|---|---|
| neutron number | 138 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 20.23 ± 0.02 d | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1948 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| 22Ne | 4.8% | 
| SF (spontaneous fission) | 
| mass number | 231 | 
|---|---|
| neutron number | 139 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 4.2 ± 0.1 d | 
| spin | 5/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1949 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| ϵ (electron capture) | 100% | 
| α (α emission) | 0.004% | 
| mass number | 232 | 
|---|---|
| neutron number | 140 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 68.9 ± 0.4 y | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1949 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| 24Ne (heavy cluster emission) | 8.9% | 
| SF (spontaneous fission) | 2.7% | 
| 28Mg | 5% | 
| mass number | 233 | 
|---|---|
| neutron number | 141 | 
| Relative Atomic Mass | |
| g-factor | -0.236 ± 0.02  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 159.19 ± 0.15 ky | 
| spin | 5/2 | 
| nuclear quadrupole moment | 3.663 ± 0.008  | 
| time of discovery or invention | 1947 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| SF (spontaneous fission) | 6% | 
| 24Ne (heavy cluster emission) | 7.2% | 
| 28Mg | 1.3% | 
| mass number | 234 | 
|---|---|
| neutron number | 142 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | 0.0054 ± 0.0005  | 
| radioactivity | ☢️ radioactive element | 
| half-life | 245.5 ± 0.6 ky | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1912 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| SF (spontaneous fission) | 1.64% | 
| 28Mg | 1.4% | 
| 26Ne | 9% | 
| mass number | 235 | 
|---|---|
| neutron number | 143 | 
| Relative Atomic Mass | |
| g-factor | -0.10857142857143 ± 0.0085714285714286  | 
| natural abundance | 0.7204 ± 0.0006  | 
| radioactivity | ☢️ radioactive element | 
| half-life | 704 ± 1 My | 
| spin | 7/2 | 
| nuclear quadrupole moment | 4.936 ± 0.006  | 
| time of discovery or invention | 1935 | 
| parity | - | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| SF (spontaneous fission) | 7% | 
| 20Ne | 8% | 
| 25Ne | 8% | 
| 28Mg | 8% | 
| mass number | 236 | 
|---|---|
| neutron number | 144 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 23.42 ± 0.04 My | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1951 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| SF (spontaneous fission) | 9.4% | 
| mass number | 237 | 
|---|---|
| neutron number | 145 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 6.752 ± 0.002 d | 
| spin | 1/2 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1940 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 100% | 
| mass number | 238 | 
|---|---|
| neutron number | 146 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | 99.2742 ± 0.001  | 
| radioactivity | ☢️ radioactive element | 
| half-life | 4.463 ± 0.003 Gy | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1896 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| α (α emission) | 100% | 
| SF (spontaneous fission) | 5.44% | 
| 2β− (double β− decay) | 2.2% | 
| mass number | 239 | 
|---|---|
| neutron number | 147 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 23.45 ± 0.02 m | 
| spin | 5/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | 1937 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 100% | 
| mass number | 240 | 
|---|---|
| neutron number | 148 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 14.1 ± 0.1 h | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1953 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 100% | 
| α (α emission) | 
| mass number | 241 | 
|---|---|
| neutron number | 149 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | |
| spin | 7/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | |
| parity | + | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 
| mass number | 242 | 
|---|---|
| neutron number | 150 | 
| Relative Atomic Mass | |
| g-factor | 0  | 
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | 16.8 ± 0.5 m | 
| spin | 0 | 
| nuclear quadrupole moment | 0  | 
| time of discovery or invention | 1979 | 
| parity | + | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 100% | 
| mass number | 243 | 
|---|---|
| neutron number | 151 | 
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element | 
| half-life | |
| spin | 9/2 | 
| nuclear quadrupole moment | |
| time of discovery or invention | |
| parity | - | 
| decay mode | intensity | 
|---|---|
| β− (β− decay) | 

| discoverer or inventor | Martin Klaproth | 
|---|---|
| location of discovery | Germany | 
| time of discovery or invention | 1789 | 
| etimoloġija | Named for the planet Uranus. | 
| pronunciation | yoo-RAY-ni-em (Ingliż) | 
| Abundance | |
|---|---|
| Abundance in Earth's crust | |
| natural abundance (ocean) | |
| natural abundance (human body) | 0.0000001 % | 
| natural abundance (meteoroid) | 0.00000098 % | 
| natural abundance (Xemx) | 0.0000001 % | 
| Abundance in Universe | 0.00000002 % |