IGNOU BCHCT 137 2026 - With suitable diagrams, explain the plane of symmetry in a cubic syste

Question

With suitable diagrams, explain the plane of symmetry in a cubic system.

10 Jan 2026

Answer :

Word Count : 302

In coordination chemistry and crystallography, a plane of symmetry refers to an imaginary plane that divides a molecule or crystal lattice into two mirror-image halves. In a cubic system, which belongs to the isometric crystal system, symmetry elements are abundant due to the equal edge lengths and 90° angles between axes. A cubic unit cell can be visualized as a cube with atoms or ions positioned at the corners, face centers, or body center, depending on whether it is simple cubic, body-centered cubic (BCC), or face-centered cubic (FCC). A plane of symmetry in a cubic system is a plane that bisects the cube such that one half is the mirror image of the other. For example, consider a

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