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What is the difference between a crystalline and an amorp...

What is the difference between a crystalline and an amorphous solid? A crystalline solid

A.

has cubic structure while amorphous solid has hexagonal structure

B.

has regularly-repeating pattern while an amorphous solid has not

C.

is white while amorphous solid is yellow

D.

is always hard while amorphous solid is always soft

E.

melts on heating while an amorphous solid sublimates on

Correct answer is B

No explanation has been provided for this answer.