Francium is considered as the most unstable natural occurring element. Several scientists unsuccessfully claimed the discovery, but finally in the year 1939 Maguerite Perey was able to provide evidence and named it after her homeland France. The radioactivity is two million times higher than plutonium. Therefore it is impossible to produce visible amounts of it, the sample woud immediately evaporate because of the heat generated by its own radioactivity.

Sodium is quite agressive. It reacts vigorously with water. Only if bonded with chlorine it becomes the harmless table salt. Street lamps that glow yellowish-orange usually contain sodium vapor.

Natrio the monster is a kind of vegetarian predator. It can run very fast and use its trunk like a catapult.

Caesium is a Metal which can combust spontaneously with air. It is used for atomic clocks.

Never call Caesius fat, or you’re in trouble. It is actually quite athletic: It can hit a traffic light with a tomato from half a mile, making it turn to red. Also it is obsessed with the clock: It asks everyone what time it is. Who can’t answer quickly enough, will get pelted with whatever is lying around.