Nitro, Nitroso, Nitrate, and Nitrite Compounds, Organic. Reactive groups are categories of chemicals that typically react in similar ways because they are similar in their chemical structure. Each substance with a chemical datasheet has been assigned to one or more reactive groups, and CAMEO Chemicals uses the reactive group assignments to make its reactivity predictions.
The largest  number that has a commonly-known specific name is a googolplex,  which is a 1 followed by a googol zeros, where googol is 10100 (a 1  followed by 100 zeros).
The largest prime number yet discovered â all 17 million digits of it. Ever since Euclid proved there were an infinite number of prime numbers, mathematicians have been on a quest to find higher and higher examples. Wednesday 6 February 2013 09.28 EST First published on Wednesday 6 February 2013 09.28 EST.