
Properties | |
| Atomic Number: | 98 |
| Atomic Weight: | (251) |
| Electron Configuration (at ground state): | 1s22s22p63s23p63d104s24p64d105s25p64f145d105f106s26p67s2 |
| Oxidation States (Bold most stable): | +3 |
| Melting Point (K): | 1170 |
| Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type: |
249 -- 351 years -- alpha particle emission 251 -- 900 years -- alpha particle emission |
| First Ionization Potential (V): | 6.3 |
| Electronegativity (Pauling's): | 1.3 |
| Thermal Conductivity (at 300K -- W m-1 K-1): | 10 |