Ketones behaviour towards isomerism?

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The discussion centers on the concept of metamerism in ketones, with some sources suggesting that higher ketones exhibit metamerism due to larger substituents, while others claim this phenomenon occurs regardless of the ketone's size. The importance of understanding the differences between ketones like propanone, butanone, and pentanones is emphasized, highlighting that while propanone and butanone have unique structures, pentanones have multiple isomers. Additionally, there is a reminder about forum rules, specifically regarding crossposting and the importance of adhering to guidelines to avoid post deletions.
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In an article I read that higher ketones show metamerism because of larger substituents but still other websites reveal that they show metamerism irrespective if lower or higher? help please
thanks
i hope mr. borek don't find fault with it now kindly...
 
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I told you to consider the differences between propanone, butanone and pentanones. There is only one propanone and butanone, but several ketones containing five carbon atoms (and many more isomers of every ketone containing more carbons). Try to draw them and see for yourself why it is the case.

You have again posted in a wrong forum, plus, what you did now counts as a crosspost, you should post in the old thread. You were told several times to read the forum rules, you are still not following them. I don't want to ban you, but with each post you are leaving me with less and less options. From now on your every post not following the rules will be deleted.
 

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