1.

For Trigonal system, axial rations are a = b = cand the axial angles are k

Answer»

`alpha = beta = gammane 90^(@)`
`alpha = beta = gamma= 90^(@)`
`alpha = gamma = 90^(@), beta ne 90^(@)`
`alpha ne beta ne gamma ne 90^(@)`

SOLUTION : For TRIGONAL or RHOMBOHEDRAL system,
`alpha = beta = gamma ne 90^(@)`


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