Periodic Table of the Elements
Chemical & Physical Properties of Einsteinium
Einsteinium
| Latin name | Einsteinium |
| English name | Einsteinium |
| chemical symbol | Es |
| atomic number | 99 |
| relative atomic mass | (251,0796) |
| period | 7 |
| group | III.B |
| classification | actinides |
| discovery year | 1952 |
| discoverer | Ghiorso |
| melting point [°C] | 860 |
| boiling point [°C] | N/A |
| density [g cm-3] | 15,37 |
| electronegativity [Pauling] | 1,3 |
| oxidation states | III, IV |
| electron configuration | [Rn]5f11 7s2 |
| 1. ionizing potential [eV] | 6,42 |
| state at normal conditions | solid |
Einsteinium is an artificial radioactive metallic element. Practical use is only for scientific research. In nature not occur.
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