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Solution


Q.

The term ‘Isomerism’ applies to organic compounds with same:
1 molecular formula but different structural formulae.  
2 molecular formula but different empirical formulae.  
3 empirical formula but different molecular formulae.  
4 structural formulae but different molecular formula.  

Ans.

(1)

The term isomerism refer to the organic compounds with same molecular formula but different structural formulae. An example is the compound with the molecular formula C5H12. It has three isomers: n-pentane, isopentane and neopentane which differ from each other in their structure but they have same molecular formula.