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Grade: 11

                        

How many and wgat are the Word roots of nomenclature in organic chemistry

7 months ago

Answers : (2)

Arun
24738 Points
							
 
The word root represents the number of carbon atoms in the parent chain. For the chains upto four carbon atoms special word roots are used whereas for the chains containing more than four carbon atoms, Greek numerals (Table 1) are used. The word roots for different carbon chains are derived by leaving ‘ane’ from the name of carbon chain of respective molecule.
 
 Some unbranched Chains and their Names
Name
Number of Carbon Atoms
Structure
Methane
1
CH4
Ethane
2
CH3CH3
Propane
3
CH3CH2CH3
Butane
4
CH3(CH2)2CH3
Pentane
5
CH3(CH2)3CH3
Hexane
6
CH3(CH2)4CH3
Heptane
7
CH3(CH2)5CH3
Octane
8
CH3(CH2)6CH3
Nonane
9
CH3(CH2)7CH3
Decane
10
CH3(CH2)8CH3
Undecane
11
CH3(CH2)9CH3
Dodecane
12
CH3(CH2)10CH3
Tridecane
13
CH3(CH2)11CH3
Tetradecane
14
CH3(CH2)12CH3
Pentadecane
15
CH3(CH2)13CH3
Hexadecane
16
CH3(CH2)14CH3
Heptadecane
17
CH3(CH2)15CH3
Octadecane
18
CH3(CH2)16CH3
Nonadecane
19
CH3(CH2)17CH3
Eicosane
20
CH3(CH2)18CH3
Heneicosane
21
CH3(CH2)19CH3
Docosane
22
CH3(CH2)20CH3
Tricosane
23
CH3(CH2)21CH3
Triacontane
30
CH3(CH2)28CH3
Hentriacontane
31
CH3(CH2)29CH3
Tetracontane
40
CH3(CH2)38CH3
Pentacontane
50
CH3(CH2)48CH3
Hexacontane
60
CH3(CH2)58CH3
Heptacontane
70
CH3(CH2)68CH3
Octacontane
80
CH3(CH2)78CH3
Nonacontane
90
CH3(CH2)88CH3
Hectane
100
CH3(CH2)98CH3
 
            The word root of one carbon chain is obtained by leaving anefrom methane i.e., meth–and similarly for others e.g.
 
                                    C1       Methane                    Meth-
                                    C2       Ethane                       Eth-
7 months ago
Vikas TU
12284 Points
7 months ago
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