Word Root

It is the basic unit of name and represents the number of carbon atoms present in the parent chain.

Parent Chain

It is the longest continuous chain of carbon atom containing functional group (or, and) multiple bonds (if present).

Number of carbon atoms in the parent chain

Word root

1

Meth

2

Eth

3

Prop

4

But

5

Pent

6

Hex

7

Hept

8

Oct

9

Non

10

Dec

11

Undec

12

Dodec

13

Tridec

14

Tetradec

15

Pentadec

16

Hexadec

17

Heptadec

18

Octadec

19

Nonadec

20

Icos

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