Q114 · CSIR NET Chemistry, December 2011
Paper: CSIR NET December 2011 · Subject: Physical Chemistry · Chapter: Solid State Chemistry · Topic: Solid State Chemistry – General · Marks: 2 · Difficulty: Easy
The value of $\mathrm{d}_{111}$ in a cubic crystal is 325.6 pm . The value of $\mathrm{d}_{333}$ is
(a)325.6 pm
(b)976.8 pm
(c)108.5 pm
(d)625.6 pm
Answer
Answer: C ✓ checked by 4AB · confidence high
The source book printed B; on checking, C is correct — see the explanation.
Explanation
d_hkl ∝ 1/√(h² + k² + l²): d₃₃₃ = d₁₁₁/3 = 108.5 pm.
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