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Assertion (A) : Graphite is an example o...

Assertion (A) : Graphite is an example of tetragonal crystal system.
Reason (R ) : For a tetragonal system, `a = b != c` and `alpha = beta = 90^(@), gamma = 120^(@)`.

A

tetragonal

B

hexagonal

C

rhombohedral

D

monoclinic

Text Solution

Verified by Experts

`{:("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=90betane90^(@)):}`
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