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What kind of order is present in a solid for it to be a perfectly crystalline solid?

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in Chemistry – Class 12 by (188k points)
What kind of order is present in a solid for it to be a perfectly crystalline solid?

(a) Long range order

(b) Short range order

(c) No order

(d) Both, short range and long range order

This question was addressed to me in an international level competition.

I would like to ask this question from Imperfections in Solids in portion Solid State of Chemistry – Class 12

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Right option is (d) Both, short range and long range order

Best explanation: Only short range order is a feature of amorphous solids. Crystalline solids exhibit both short and long range order. Crystalline solids are formed by repetitive arrangement of unit cells.

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