1.

For a crystal system a=b=c and alpha=beta=gammane90^(@)

Answer»

Tetragonal
HEXAGONAL
Rhombohedral
Monoclinic

Solution :Crystal system AXIAL DISTANCES Axial ANGLES
Tetragonal `a=bnec alpha=beta=gamma=90^(@)`
Hexagonal `a=bnec alphanebeta=90^(@),gamma=120^(@)`
Rhombohedral `a=b=c alpha=beta=gammane90^(@)`
Monoclinic `anebnec alpha=gamma=90,betane90^(@)`


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