Properties | |
| Atomic Number: | 25 |
| Atomic Weight: | 54.9380 |
| Electron Configuration (at ground state): | 1s22s22p63s23p63d54s2 |
| Oxidation States (Bold most stable): | +2, +3, +4, +6, +7 |
| Boiling Point (K): | 2235 |
| Melting Point (K): | 1518 |
| Density (at 300K -- g/cm3): | 7.44 |
| Atomic Volume (at 300K -- cm3/mol) | 7.39 |
| Number of stable isotopes: | 1 |
| Mass Number (Bold naturally occurring) -- Half-Life -- Disintigration Type: |
53 -- 2 x 106 years -- orbital electron capture 54 -- 313.0 days -- orbital electron capture 56 -- 2.578 hours -- beta particle (electron) emission |
| Covalent Radius (Å): | 1.17 |
| Atomic Radius (Å): | 1.35 |
| First Ionization Potential (V): | 7.435 |
| Electronegativity (Pauling's): | 1.55 |
| Specific Heat Capacity (at 300K -- J g-1 K-1): | 0.48 |
| Heat of Vaporization (kJ/mol): | 219.74 |
| Heat of Fusion (kJ/mol): | 14.64 |
Electrical Conductivity (at 293K for polycrystalline material -- 106  -1 cm-1): |
0.5 |
| Thermal Conductivity (at 300K -- W m-1 K-1): | 7.82 |
| Crystal Structure: |  Cubic, body centered |
| Acid-Base Properties: |  Very acidic |