JEE Main Chemistry question

Not in JEE Main or NEET syllabus

The statement that "the crystals of same substance can have different shapes depending upon the number and size of faces but the angle between the corresponding faces remains constant" is known as:

(A)Hauy's law of rationality of indices
(B)The law of constancy of interfacial anglesCorrect
(C)The law of constancy of symmetry
(D)None of the above

Answer: (B)

Solution

This is precisely the statement of the law of constancy of interfacial angles: whatever the size or number of faces a crystal develops, the angles between corresponding faces of the same substance remain fixed. This is distinct from Hauy's law of

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Question ID VK-141666