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).
Sometimes we need to be able to find the greatest commonfactor of a set of numbers. The greatest common, or GCF, is thelargest number that will divide evenly into each of the numbersin a set. Example 6. Find the GCF for the set of numbers: 10, 12, 20. The largest number that will go into each of these numbers is2.