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Table P – Organic Prefixes
Symbols Used in Nuclear Chemistry
γ
n
positron
• Methane contains 1 carbon atom, so it has the prefix meth-. • Ethane contains 2 carbon atoms, so it has the prefix eth-. • Propene contains 3 carbon atoms, so it has the prefix prop-.
There are many Regents questions based on this Reffy.
Reffy, Table P (p. 7) shows the different prefixes used to name1 11
organic compounds, based on how many carbon atoms are in the compound.
Name
alpha particle
beta particle
gamma radiation
Notation
Symbol
neutron 0n
Table O
42He or 42α α 0 e or 0 β β–
–1 –1 0γ
proton 1H or 1p p
0e or 0β β+ +1 +1
Table P
Organic Prefixes
Prefix
Number of Carbon Atoms
meth-
1
eth-
2
prop-
3
but-
4
pent-
5
hex-
6
hept-
7
oct-
8
non-
9
dec-
10
Name
General Formula
Examples
Structural Formula
HH HCCH
Table Q
Homologous Series of Hydrocarbons
alkanes CnH2n+2 ethane
Name
H
UNIT 11: ORGANIC CHEMISTRY © 408
H
