Which of the following crystal has a unit cell such that a≠b≠c and α≠β≠γ≠90∘?
A
K2Cr2O7
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B
NaNO3
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C
KNO3
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D
K2SO4
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Solution
The correct option is AK2Cr2O7 a≠b≠c and α≠β≠γ≠90∘ refers to a triclinic crystal system which is shown by K2Cr2O7. KNO3 has an orthorhombic structure. NaNO3 has a rhombohedral structure.