In diamond structure ,carbon atoms form fcc lattic and `50%` tetrahedral voids occupied by acrbon atoms . Evergy carbon atoms is surrounded tetrachedral by four carbon atom with bond length 154 pm . Germanium , silicon and grey tin also crystallise in same way as diamond `(N_(A)=6xx 10^(23))`
The mass of diamond unit cell is:
A. ` 96 amu`
B. `96 gm`
C. `144 amu`
D. `144gm`
