uranium vs berkelium

uranium (chemical element) | berkelium (chemical element)

Periodic table location

Images

| uranium | berkelium atomic symbol | U | Bk atomic number | 92 | 97 short electronic configuration | [Rn]7s^25f^36d^1 | [Rn]7s^25f^9 Aufbau diagram | 6d 5f 7s | 5f 7s block | f | f period | 7 | 7 atomic mass | 238.02891 u | 247 u half-life | 4.47 Gyr | 1380 yr

| uranium | berkelium phase at STP | solid | solid melting point | 1135 °C | 1050 °C boiling point | 3927 °C | molar heat of fusion | 14 kJ/mol | molar heat of vaporization | 420 kJ/mol | specific heat at STP | 116 J/(kg K) | (properties at standard conditions)

| uranium | berkelium density | 19.05 g/cm^3 | 14.78 g/cm^3 liquid density | 17.3 g/cm^3 | molar volume | 12.495 cm^3/mol | 16.7 cm^3/mol Mohs hardness | 6 (≈ microcline) | Vickers hardness | 1960 MPa | Brinell hardness | 2400 MPa | bulk modulus | 100 GPa | shear modulus | 111 GPa | Young's modulus | 208 GPa | Poisson ratio | 0.23 | sound speed | 3155 m/s | thermal expansion | 1.39×10^-5 K^(-1) | thermal conductivity | 27 W/(m K) | 10 W/(m K) (properties at standard conditions)

| uranium electrical type | conductor resistivity | 2.8×10^-7 Ω m (ohm meters) electrical conductivity | 3.6×10^6 S/m (siemens per meter) magnetic type | paramagnetic volume magnetic susceptibility | 4.11×10^-4 mass magnetic susceptibility | 2.16×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 5.14×10^-9 m^3/mol (cubic meters per mole) work function | (3.63 to 3.9) eV threshold frequency | (8.777×10^14 to 9.43×10^14) Hz (hertz) superconducting point | 0.68 K (kelvins) color | (silver)

| uranium | berkelium valence | 6 | 4 electronegativity | 1.38 | 1.3 first ionization energy | 597.6 kJ/mol (kilojoules per mole) | 601 kJ/mol (kilojoules per mole) ionization energies | 597.6 kJ/mol | 1420 kJ/mol | 601 kJ/mol

Reactivity

| uranium | berkelium term symbol | ^5L_6 | ^6H_(15/2) atomic radius | 175 pm | covalent radius | 196 pm | van der Waals radius | 186 pm | (electronic ground state properties)

| uranium | berkelium universe abundance | 2×10^-8 mass% | solar abundance | 1×10^-7 mass% | 0 mass% meteorite abundance | 9.8×10^-7 mass% | 0 mass% crust abundance | 1.8×10^-4 mass% | 0 mass% ocean abundance | 3.3×10^-7 mass% | 0 mass% human abundance | 1×10^-7 mass% | 0 mass% universe molar abundance | 1×10^-10 mol% | solar molar abundance | 4×10^-10 mol% | 0 mol% meteorite molar abundance | 1×10^-7 mol% | 0 mol% ocean molar abundance | 8.6×10^-9 mol% | 0 mol% crust molar abundance | 1.5×10^-5 mol% | 0 mol% human molar abundance | 3×10^-9 mol% | 0 mol%

| uranium | berkelium half-life | 4.47 Gyr | 1380 yr lifetime | 6.45 Gyr | 1990 yr specific radioactivity | 12.44 kBq/g | 38.82 GBq/g decay mode | alpha emission | alpha emission nuclear spin | U-217: 1/2^- | U-218: 0^+ | U-219: 9/2^+ | U-220: 0^+ | U-221: 9/2^+ | U-222: 0^+ | U-223: 7/2^+ | U-224: 0^+ | U-225: 5/2^+ | U-226: 0^+ | U-227: 3/2^+ | U-228: 0^+ | U-229: 3/2^+ | U-230: 0^+ | U-231: 5/2^- | U-232: 0^+ | U-233: 5/2^+ | U-234: 0^+ | U-235: 7/2^- | U-236: 0^+ | U-237: 1/2^+ | U-238: 0^+ | U-239: 5/2^+ | U-240: 0^+ | U-241: 7/2^+ | U-242: 0^+ | Bk-237: 7/2^+ | Bk-239: 7/2^+ | Bk-241: 7/2^+ | Bk-242: 2^- | Bk-243: 3/2^- | Bk-244: 4^- | Bk-245: 3/2^- | Bk-246: 2^- | Bk-247: 3/2^- | Bk-248: 6^+ | Bk-249: 7/2^+ | Bk-250: 2^- | Bk-251: 3/2^- unstable isotopes | U-238 (4.47 Gyr) | U-235 (0.704 Gyr) | U-236 (23.42 Myr) | U-234 (0.2455 Myr) | U-233 (0.1592 Myr) | U-232 (68.8 yr) | U-230 (21 days) | U-237 (6.75 days) | U-231 (100 h) | U-240 (14.1 h) | U-229 (58 min) | U-239 (23.45 min) | U-242 (16.83 min) | U-228 (9.17 min) | U-241 (5 min) | U-227 (66 s) | U-226 (350 ms) | U-225 (84 ms) | U-217 (16 ms) | U-224 (900 µs) | U-218 (510 µs) | U-219 (42 µs) | U-223 (18 µs) | U-222 (1 µs) | U-221 (700 ns) | U-220 (60 ns) | Bk-247 (1380 yr) | Bk-248 (9.5 yr) | Bk-249 (330 days) | Bk-245 (119 h) | Bk-246 (44 h) | Bk-243 (4.4 h) | Bk-244 (4.35 h) | Bk-250 (192.67 min) | Bk-251 (55.67 min) | Bk-253 (10 min) | Bk-242 (7 min) | Bk-240 (4.83 min) | Bk-241 (4.67 min) | Bk-239 (200 s) | Bk-238 (144 s) | Bk-252 (110 s) | Bk-254 (60 s) | Bk-237 (60 s) | Bk-236 (60 s) | Bk-235 (20 s) neutron cross-section | 7.57 b | 710 b neutron mass absorption | 5×10^-4 m^2/kg |

| uranium | berkelium CAS number | 7440-61-1 | 7440-40-6 PubChem CID number | 23989 | Gmelin number | 16315 |