Latin name | Francium |
English name | Francium |
chemical symbol | Fr |
atomic number | 87 |
relative atomic mass | (223,0197) |
period | 7 |
group | I.A |
classification | alkali metals |
discovery year | 1939 |
discoverer | Marguerite Perey |
melting point [°C] | 27 |
boiling point [°C] | 677 |
density [g cm-3] | 1,873 |
electronegativity [Pauling] | 0,7 |
oxidation states | I |
electron configuration | [Rn]7s1 |
thermal conductivity [W m-1 K-1] | 3,61 |
state at normal conditions | solid |