Try the following: http://www.areopagus.net/grkelements.htm
If that doesn't work, a good dictionary will give you the etymology.
It originates from the Greek word hudur (water) and the suffix -gen (producer of).
Whoops! SraMcGin's link gives that and many more elements that originate from Greek.
I need help in understanding the suffixes. For example: -ate -ide -ite. I also need help with the prefixes. For example: per- di- hypo-.
You need to know the name of acids. Salts are named for the acid from which the salt is derived. We'll do that first.
HCl hydrogen chloride
HClO hypochlorous acid
HClO2 chlorous acid
HClO3 chloric acid
HClO4 perchloric acid.
For the salts of those acids, the binary is -ide
ic changes to ate.
ous changes to ite.
For example, NaClO is sodium hypochlorite.
NaClO3 is sodium chlorate.
NaClO4 is sodium perchlorate.
NaClO2 is sodium chlorite.
NaCl is sodium chloride.