Solid State
Classification of solids; crystalline state; seven crystal systems with cell parameters; close packed structures (cubic and hexagonal); packing in fcc, bcc and hcp lattices; nearest neighbours; ionic radii and radius ratio; point defects.
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Take a full mock →Q1 · Solid State · EASY
In a face-centered cubic (FCC) unit cell, the number of atoms per unit cell is:
Q2 · Solid State · MEDIUM
A metal crystallizes in a body-centered cubic (bcc) lattice with edge length 3.16 Å. If the atomic radius is r, what is the packing efficiency (%) of this structure?
Q3 · Solid State · HARD
A solid AB has a rock salt (NaCl) structure with edge length 5.6 Å. If the radius of A⁺ is 0.98 Å, calculate the radius of B⁻ (in Å). (In rock salt, 2(r₊ + r₋) = a)