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Which of the following unit cells has constituent particles occupying the corner positions only?(a) Body-centered cell(b) Primitive cell(c) Face centered cell(d) End-centered cellI have been asked this question during an online exam.My query is from Solid State in chapter Solid State of Chemistry – Class 12

Answer»

Correct answer is (b) Primitive cell

Easiest explanation: According to classification of unit CELLS, a primitive unit cell is one which has all constituent PARTICLES located at its corners. BCC has one particle PRESENT at the center including the corners. FCC has an individual cell shared between the faces of adjacent cells. END centered cells have cells present at centers of two opposite faces.



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