What r isomers and define isomerism​

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In chemistry, isomers are molecules or polyatomic ions with identical molecular formulas — that is, the same number of atoms of each element — but distinct arrangements of atoms in space. Isomerism is the existence or possibility of isomers. Isomers do not necessarily share similar chemical or physical properties.

Mr. Goog.le says

2b2t

explanation:

2b2t