Question

In tetragonal crystal system, which of following is not true?

• A. All axial lengths and all axial angles are equal
• B. All three axial lengths are equal
• C. All three axial angles are equal
• D. Two axial angles are equal but the third is different

Answer 1

Answer: (C)

In tetragonal system,

$a=b\ne c,\alpha =\beta =\gamma =90^{\circ }$
Here all three axial angles are equal but all lengths in tetragonal system are not same.