| Property | Value |
|---|---|
| Atomic number | 103 |
| Atomic weight | 260.1053 amu |
| Element family | Actinoids |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | None |
| Previous element | Nobelium |
| Next element | Rutherfordium |
| Density | 14.4 g/cm3 (STP) |
| Melting | 1627 °C |
| First ionization potential | 4.871 eV |
| Electron affinity | -0.310 eV |
| Electronegativity | 1.3 |
| Discovery year | 1961 |
Lawrencium is an element number 103 from actinoids family. Its symbol is Lr. Lawrencium atomic weight is 260.1053 amu. Lr has no stable or long lived isotopes. Lawrencium electronic configuration is 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p67s26d15f14. Lawrencium density is 14.4 g/cm3 (STP). Lawrencium melting point is 1627 °C. Lawrencium first ionization potential is 4.871 eV. Lawrencium first ionization potential is -0.310 eV. Lawrencium electronegativity by Pauling scale is 1.3. Lawrencium was discovered in 1961.
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