In diamond  structure ,carbon  atoms  form fcc lattic   and `50%` tetrahedral  voids  occupied
Channel: Doubtnut
Date: 2020-04-19

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: