Match List I with List II.
| List I | List II |
| (A) Orthorhombic | (I) α = γ = 90° β ≠ 90° |
| (B) Hexagonal | (II) α = β = γ = 90° |
| (C) Rhombohedral | (III) α = β = 90° γ = 120° |
| (D) Monoclinic | (IV) α = β = γ ≠ 90° |
Answer & explanation
Correct answer: option 3
The correct answer is option 3. (A)-(II), (B)-(III), (C)-(IV), (D)-(I).
| List I | List II |
| (A) Orthorhombic | (II) α = β = γ = 90° |
| (B) Hexagonal | (III) α = β = 90° γ = 120° |
| (C) Rhombohedral | (IV) α = β = γ ≠ 90° |
| (D) Monoclinic | (I) α = γ = 90° β ≠ 90° |
| Crystal system | Edge lengths | Angles |
| Cubic | a = b = c | α = β = γ = 90° |
| Tetragonal | a = b ≠ c | α = β = γ = 90° |
| Orthorhombic | a ≠ b ≠ c | α = β = γ = 90° |
| Monoclinic | a ≠ b ≠ c | α = γ = 90° β ≠ 90° |
| Hexagonal | a = b ≠ c | α = β = 90° γ = 120° |
| Rhombohedral | a = b = c | α = β = γ ≠ 90° |
| Triclinic | a ≠ b ≠ c | α ≠ β ≠ γ ≠ 90° |