Chemistry Subscripts

Mono
(not used on first non-metals)
1
Di-
2
Tri-
3
Tetra-
4 (drop last “a” if name begins with a vowel)
Penta-
5 (drop last “a” if name begins with a vowel)
Hexa-
6 (drop last “a” if name begins with a vowel)
Hepta-
7 (drop last “a” if name begins with a vowel)
Octa-
8 (drop last “a” if name begins with a vowel)
Nona-
9 (drop last “a” if name begins with a vowel)
Deca-
10