CBSE Class 10 Answered
what are isomers? what are the conditions for isomerism?
Asked by Aditya Narasimhan | 23 Oct, 2013, 10:46: PM
Expert Answer
Isomers: Two or more compounds which have same chemical formula but different arrangement of atoms are called isomers.
For example: pentane with C5H12 exists in the following three forms.
Molecular formula of pentane is C5H12. The possible structural isomers are:
(i) CH3CH2CH2 CH2CH3
Normal or n-pentane
(ii) CH3CH2CH( CH3)CH3
Iso-pentane
(iii) CH3C( CH3)2CH3
Neo-pentane
Conditions for Isomerism:
a. Only alkanes with more than three carbon atoms can have isomers.
b. The side chains cannot be present on the terminal carbons.
Answered by Hanisha Vyas | 24 Oct, 2013, 10:47: AM
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