Sunday, February 5, 2017

organic chemistry - Which is the correct definition for metamers (or metamerism)?


I have heard two definitions of metamers.




  1. Compounds having the same molecular formula but different number of carbon atoms on either side of the functional group.

  2. Compounds having the same molecular formula but different alkyl groups on either side of the functional group.


Which one of these is correct?


Are pentan-2-one and 3-methylbutan-2-one metamers?


pentan-2-one and 3-methylbutan-2-one




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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

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