Which phenomenon occurs when a molecule exhibits an unequal distribution of alkyl groups on either side of a functional group?

Which phenomenon occurs when a molecule exhibits an unequal distribution of alkyl groups on either side of a functional group?

کون سا رجحان اس وقت ہوتا ہے جب ایک مالیکیول کسی فنکشنل گروپ کے دونوں طرف الکائل گروپس کی غیر مساوی تقسیم کو ظاہر کرتا ہے؟
Explanation

When a molecule has an unequal distribution of alkyl groups on either side of a functional group, metamerism occurs.

Metamerism is a type of isomerism that happens when different alkyl chains are present on either side of a functional group.