2-Methylpent-2,3-diene is achiral due to.1.centre of symmetry.2.plane of symmetry.3.a C2 axis of symmetry.4.both plane and axis of symmetry?

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Answer

Both

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Chirality of 2-Methylpent-2,3-diene

Centre of symmetry: 2-Methylpent-2,3-diene does not possess a centre of symmetry, as there is no point within the molecule where one half is the mirror image of the other half.

Plane of symmetry: Similarly, the molecule lacks a plane of symmetry, which would divide the molecule into two halves that are mirror images of each other when the molecule is placed in that plane.

C2 axis of symmetry: 2-Methylpent-2,3-diene does not have a C2 axis of symmetry, which would be a rotation axis that would result in the molecule being superimposable on its mirror image after a 180-degree rotation.

Both plane and axis of symmetry: Since the molecule lacks both a plane of symmetry and a C2 axis of symmetry, it is considered achiral. This means that the molecule and its mirror image are superimposable and, therefore, the molecule is not optically active.

Overall, the absence of a centre of symmetry, plane of symmetry, and C2 axis of symmetry in 2-Methylpent-2,3-diene leads to its achirality.

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