The number of Cl ions per units cell of a simple cubic lattice at the corner is/are:
Correct answer: A. 1
- A. 1
- B. 3
- C. 4
- D. 6
Explanation
In a simple cubic lattice, each corner of the cube is shared by 8 adjacent unit cells. Since each corner contributes 1/8th of an ion to each of the surrounding 8 unit cells, the total contribution of Cl⁻ ions from the corners is 8 × 1/8 = 1 Cl⁻ ion per unit cell.
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A crystal lattice is the regular three-dimensional arrangement of particles in a crystalline solid. The content includes lattice points, unit cells, coordination number, packing patterns, and the differences among ionic, metallic, molecular and covalent network crystals, which should not be confused with amorphous solids.
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