- Francium is a chemical element; it has symbol Fr and atomic number 87. It is extremely radioactive; its most stable isotope, francium-223 (originally called actinium K after the natural decay chain in which it appears), has a half-life of only 22 minutes. It is the second-most electropositive element, behind only caesium, and is the second rarest naturally occurring element (after astatine). Francium’s isotopes decay quickly into astatine, radium, and radon. The electronic structure of a francium atom is [Rn] 7s1; thus, the element is classed as an alkali metal.
The Paris slums are a gathering-place for eccentric people — people who have fallen into solitary, half-mad grooves of life and given up trying to be normal or decent. Poverty frees them from normal standards of behaviour, just as money frees people from work. Some of the lodgers in our hotel lived lives that were curious beyond words.
George Orwell, Down and Out in Paris and London