What are the crystallographic parameter of hexagonal, monoc…

Chemistry Solid State General Subjective Type

Published on: August 13, 2026

What are the crystallographic parameter of hexagonal, monoclinic and triclinic unit cell respectively

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Crystal System	Features	Unit cell found	Examples
Monoclinic	a ≠ b ≠ c α = γ = 90°; β ≠ 120°, ≠ 90°, ≠ 60°	S, EC	Monoclinic sulphur, PbCrO4 , Na2SO4.10H2O, Na2B4O7.10H2O.
Hexagonal	a = b ≠ c α = β = 90°, γ = 120°	S	Graphite, ZnO, CdS, Mg, PbI2, SiC.
Triclinic	a ≠ b ≠ c α ≠ β ≠ γ ≠ 90°	S	K2Cr2O7, CuSO4.5H2O, H3BO3.

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