Question #fa4e9

1 Answer
Dec 28, 2014

In English, multiplying prefixes like di, tri, tetra, etc. start with a capital letter only when they are at the beginning of a sentence.

For example, we would write,

"Trichloromethane and diiodomethane are better known as chloroform and methylene chloride".

The rule holds even when there are numbers in front of the prefix:

"1,1,1,2-Tetrafluoroethane and 1,1,2,2-tetrafluoroethane are both tetrafluoroalkanes".