| Atomic Number | 93 |
|---|---|
| Atomic Weight | 237 |
| mass number | 219 |
| Group | |
|---|---|
| Period | 7 |
| Block | f |
| proton | 93 p+ |
|---|---|
| neutron | 126 n0 |
| elettron | 93 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, 22, 9, 2 |
| valence electron | 2 ⓘ |
| electron configuration | [Rn] 5f4 6d1 7s2ⓘ 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f4 6d1 7s2 |
| oxidation number | 2, 3, 4, 5, 6, 7 |
| electronegativity |
1.3
|
| 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 | silvery metallic |
| 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 | |
| magnetic susceptibility (Mass) | |
| magnetic susceptibility (Molar) | |
| magnetic susceptibility (Volume) | |
| 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 | |
| speed of sound | |
| classification | |
| Category | Actinides, Actinides |
| CAS Group | |
| IUPAC Group | |
| Glawe Number | 37 |
| Mendeleev Number | 22 |
| Pettifor Number | 44 |
| Geochemical Class | |
| Goldschmidt classification | synthetic |
| Gas Basicity | |
|---|---|
| polarizability | |
| C6 Dispersion Coefficient | |
| allotrope | |
| Neutron cross section | 180
|
| Neutron Mass Absorption | |
| quantum number | 6L11/2 |
| space group | 62 (Pnma) |
| Stable Isotopes | 0 |
|---|---|
| Unstable Isotopes | 27 |
| Natural Isotopes | 0 |
| mass number | 219 |
|---|---|
| neutron number | 126 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 570 ± 450 us
|
| spin | 9/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 2015 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| mass number | 220 |
|---|---|
| neutron number | 127 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 29 ± 11 ns
|
| spin | 1 |
| nuclear quadrupole moment | |
| time of discovery or invention | 2019 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| mass number | 221 |
|---|---|
| neutron number | 128 |
| 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 |
|---|---|
| α (α emission) |
| mass number | 222 |
|---|---|
| neutron number | 129 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 480 ± 190 ns
|
| spin | 1 |
| nuclear quadrupole moment | |
| time of discovery or invention | 2020 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| mass number | 223 |
|---|---|
| neutron number | 130 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.5 ± 0.8 us
|
| spin | 9/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 2017 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| mass number | 224 |
|---|---|
| neutron number | 131 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 48 ± 19 us
|
| spin | 2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 2018 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| mass number | 225 |
|---|---|
| neutron number | 132 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 6.5 ± 3.5 ms
|
| spin | 9/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1994 |
| parity | - |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) |
| mass number | 226 |
|---|---|
| neutron number | 133 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 35 ± 10 ms
|
| spin | |
| nuclear quadrupole moment | |
| time of discovery or invention | 1990 |
| parity |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) |
| mass number | 227 |
|---|---|
| neutron number | 134 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 510 ± 60 ms
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1990 |
| parity | + |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| β+ (β+ decay; β+ = ϵ + e+) |
| mass number | 228 |
|---|---|
| neutron number | 135 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 61.4 ± 1.4 s
|
| spin | 4 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1994 |
| parity | + |
| decay mode | intensity |
|---|---|
| ϵ (electron capture) | 59% |
| α (α emission) | 41% |
| β+ SF (β+-delayed fission) | 0.012% |
| mass number | 229 |
|---|---|
| neutron number | 136 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 4 ± 0.18 m
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1968 |
| parity | + |
| decay mode | intensity |
|---|---|
| α (α emission) | 68% |
| β+ (β+ decay; β+ = ϵ + e+) |
| mass number | 230 |
|---|---|
| neutron number | 137 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 4.6 ± 0.3 m
|
| spin | 4 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1968 |
| parity | + |
| decay mode | intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 97% |
| α (α emission) | 3% |
| mass number | 231 |
|---|---|
| neutron number | 138 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 48.8 ± 0.2 m
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1950 |
| parity | + |
| decay mode | intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 98% |
| α (α emission) | 2% |
| mass number | 232 |
|---|---|
| neutron number | 139 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 14.7 ± 0.3 m
|
| spin | 5 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1950 |
| parity | - |
| decay mode | intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| α (α emission) |
| mass number | 233 |
|---|---|
| neutron number | 140 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 36.2 ± 0.1 m
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1950 |
| parity | + |
| decay mode | intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| α (α emission) | 0.0007% |
| mass number | 234 |
|---|---|
| neutron number | 141 |
| Relative Atomic Mass | |
| g-factor | 0
|
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 4.4 ± 0.1 d
|
| spin | 0 |
| nuclear quadrupole moment | 0
|
| time of discovery or invention | 1949 |
| parity | + |
| decay mode | intensity |
|---|---|
| β+ (β+ decay; β+ = ϵ + e+) | 100% |
| mass number | 235 |
|---|---|
| neutron number | 142 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 396.1 ± 1.2 d
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1949 |
| parity | + |
| decay mode | intensity |
|---|---|
| ϵ (electron capture) | 99.9974% |
| α (α emission) | 0.0026% |
| mass number | 236 |
|---|---|
| neutron number | 143 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 153 ± 5 ky
|
| spin | 6 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1949 |
| parity | - |
| decay mode | intensity |
|---|---|
| ϵ (electron capture) | 86.3% |
| β− (β− decay) | 13.5% |
| α (α emission) | 0.16% |
| mass number | 237 |
|---|---|
| neutron number | 144 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.144 ± 0.007 My
|
| spin | 5/2 |
| nuclear quadrupole moment | 3.886 ± 0.006
|
| time of discovery or invention | 1948 |
| parity | + |
| decay mode | intensity |
|---|---|
| α (α emission) | 100% |
| SF (spontaneous fission) | 2% |
| 30Mg | 4% |
| mass number | 238 |
|---|---|
| neutron number | 145 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.099 ± 0.002 d
|
| spin | 2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1949 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| mass number | 239 |
|---|---|
| neutron number | 146 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.356 ± 0.003 d
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1940 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| α (α emission) |
| mass number | 240 |
|---|---|
| neutron number | 147 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 61.9 ± 0.2 m
|
| spin | 5 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1953 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| mass number | 241 |
|---|---|
| neutron number | 148 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 13.9 ± 0.2 m
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1959 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| α (α emission) |
| mass number | 242 |
|---|---|
| neutron number | 149 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.2 ± 0.2 m
|
| spin | 1 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1979 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| mass number | 243 |
|---|---|
| neutron number | 150 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 1.85 ± 0.15 m
|
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1979 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| mass number | 244 |
|---|---|
| neutron number | 151 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | 2.29 ± 0.16 m
|
| spin | 7 |
| nuclear quadrupole moment | |
| time of discovery or invention | 1987 |
| parity | - |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
| mass number | 245 |
|---|---|
| neutron number | 152 |
| Relative Atomic Mass | |
| g-factor | |
| natural abundance | |
| radioactivity | ☢️ radioactive element |
| half-life | |
| spin | 5/2 |
| nuclear quadrupole moment | |
| time of discovery or invention | |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) |
| discoverer or inventor | E.M. McMillan, P.H. Abelson |
|---|---|
| location of discovery | United States |
| time of discovery or invention | 1940 |
| etimoloġija | Named for the planet Neptune. |
| pronunciation | nep-TOO-ni-em (Ingliż) |
| Abundance | |
|---|---|
| Abundance in Earth's crust | |
| natural abundance (ocean) | |
| natural abundance (human body) | 0 %
|
| natural abundance (meteoroid) | 0 %
|
| natural abundance (Xemx) | 0 %
|
| Abundance in Universe | 0 %
|