Will Reynolds answered on 14 Jun 2012: Hi bjw1472. read more
With the total amount of naturally occurring Francium in the world being estimated at 30g and quantities of synthetic material being vanishingly small, the amount you would be able to eat would be too tiny to have any effect. read more
Why Francium Reacts so Strongly. The reason for the strong exothermic reaction is because francium is an alkali metal. As you move down the first column of the periodic table, the reaction between the alkali metals and water becomes increasingly violent. A small amount of lithium will float on water and burn. Sodium burns more readily. read more