Boron
5
B
Boro
![Boro](http://elemonster.de/sites/default/files/styles/large/public/field/image/005_Bor-01.png?itok=hlTLMdiz)
At first sight boron seems like an unimpressive half metal. But actually it has quite a kick, after all it is the (second) hardest element after diamond. It can be found in rocket fuels, bullet-proof vests and in detergents. Boro the monster always keeps its cool. Some think he’s arrogant some call him „boring boron“. But as is generally known still waters run deep...