Only those atoms which four covalent bonds produce a repetitive three dimesional structure using only covalent bonds., e.g. , diamond structure.The latter is based on a FCC lattice where lattice points are occupied by carbon atoms.Every atom in this structure is surrounded tetrahedrally by four others.Germanium, silicon and grey tin also crystallize in the same way as diamond. (Given :N_A=6xx10^(23) sin 54^@44'=0.8164) If edge length of the cube is 3.60Å, then radius of carbon atom is

Only those atoms which four covalent bonds produce a repetitive three

1.	Only those atoms which four covalent bonds produce a repetitive three dimesional structure using only covalent bonds., e.g. , diamond structure.The latter is based on a FCC lattice where lattice points are occupied by carbon atoms.Every atom in this structure is surrounded tetrahedrally by four others.Germanium, silicon and grey tin also crystallize in the same way as diamond. (Given :N_A=6xx10^(23) sin 54^@44'=0.8164) If edge length of the cube is 3.60Å, then radius of carbon atom is
Answer» 0.78Å 0.92Å 0.64Å 0.35Å Solution :`4d_(c-c)SIN(54^@44')=sqrt2a " " IMPLIES " " R=(d_(c-c))/2=0.78`