Cyanide

Ask your students to name you a poison and probably the first one that they mention will be Cyanide. The will probably have come across this substance watching World War II or James Bond movies. This aside, what do they really know about Cyanide? Image kindly reproduced according to the licence found here. Cyanides contain the cyano group CN-. There is a triple bond between the carbon and nitrogen and the negative charge is centred on the carbon atom. In organic compounds ...

Copernicium

Coppernicium, Cn, (proton number 112) was discovered 15 years ago, added to the periodic table two years ago but is still relatively unheard of. The reason why it is relatively unheard of is the fact that it is man made and extremely radioactive. The most stable isotope only has a half life of four minutes. Image reproduced according to the licence at: http://en.wikipedia.org/wiki/File:Nikolaus_Kopernikus.jpg It is named after Nicolaus Copernicus, who, in 1543 published the book 'De revolutionibus orbium coelestium (On the Revolutions of ...