Concept:Crystalline solids feature highly ordered, repeating arrangements of atoms. Because of this geometry, there are specific directions where the bonds holding the lattice together are weaker.
Solution:- When stress or force is applied to a crystalline solid, it will naturally split or break along these specific, well-defined directional planes of weakness.
- These flat, smooth surfaces that result from the break are scientifically termed cleavage planes.
- This property is a hallmark of crystallinity, distinguishing them from amorphous solids, which shatter irregularly (conchoidal fracture).
Why other options are incorrect:- B: Refractory refers to materials highly resistant to heat, not structural breaking planes.
- C, D: Sagittal and Coronal planes are anatomical terms used to describe cross-sections of the human body, completely irrelevant to solid-state chemistry.
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