Q143 · CSIR-NET Chemistry, December 2019

Paper: CSIR-NET December 2019 · Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Crystal Systems Lattices · Marks: 2 · Difficulty: Medium

Iron belongs to the BCC lattice. The Miller indices of the second allowed reflection in the powder diffraction pattern of iron would be

(a)(100)

(b)(111)

(c)(200)

(d)(210)

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

bcc allows h + k + l even: (110) first, then (200).

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