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Which of the following lattices has the ...

Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) body-centred cubic and (iii) hexagonal close-packed lattice ?

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To determine which of the given lattices has the highest packing efficiency, we will analyze the packing efficiency of each lattice: simple cubic, body-centered cubic (BCC), and hexagonal close-packed (HCP). ### Step-by-Step Solution: 1. **Understanding Packing Efficiency**: - Packing efficiency is defined as the percentage of the total volume of a unit cell that is occupied by the constituent particles (atoms, ions, or molecules). - The formula for packing efficiency (PE) is given by: \[ ...
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