This element is a solid. Nickel is classified as a Transition Metal which are located in Groups 3 - 12 of the Periodic Table. Elements classified as Transition Metals are generally described as ductile, malleable, and able to conduct electricity and heat.
The man who invented the first ATM cash machine has died, aged 84, after a short illness. John Shepherd-Barron, cash machine inventor, dies Photo: BOBBY NELSON.
The Enigma. cipher machine. The Enigma machines were a series of electro-mechanical rotor cipher machines developed and used in the early- to mid-20th century to protect commercial, diplomatic and military communication. Enigma was invented by the German engineer Arthur Scherbius at the end of World War I.