Q62 · CSIR NET Chemistry, December 2018
Paper: CSIR NET December 2018 · Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Crystal Systems Lattices · Marks: 2 · Difficulty: Medium
In a cubic crystal, the (111) and (222) reflections are observed, but not the (001) reflection. The Bravais lattice is
(a)body centred cubic
(b)face centred cubic
(c)simple cubic
(d)side centred cubic
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
(111) and (222) present but (001) absent: the fcc condition (h, k, l unmixed) — a bcc lattice would forbid (111).
Study loop for Solid State Chemistry