Apo vs Azo - What's the difference?
apo | azo |
A'ir '''P'''ost ' O ffice (both Army and Air Force)
A'rmy '''P'''ost ' O ffice
A'ir Force '''P'''ost ' O ffice
azote, nitrogen
Applied loosely to compounds having nitrogen variously combined, as in cyanides, nitrates, etc.
Now especially applied to compounds containing a two atom nitrogen group (-N=N-) uniting two hydrocarbon radicals, as in azobenzene etc.