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 odds are against punters who use family birthdays to pick their lottery numbers. Statistics show four of the seven most frequently drawn numbers have been higher than 31 - the number of birth days in the longest months. The top seven numbers to pop up in the 1758 draws since the National Lottery launch in 1994 have been: 38, 23, 31, 25, 43, 33 and 44. And the worst number to put on your lotto ticket is 13 - which has been unlucky for everybody. Number 13 has only been drawn 203 times.