The maximum percentage of available volume that can be filled in a face centred cubic system by an atom is:
Face-centered cubic cells have $$74\%$$ packaging efficiency for spheres or ions of equal diameter. Some examples of FCC arrangements are aluminum, copper and buckminsterfullerenes-C-60 (buckyballs) etc.
An element X (atomic weight $$= 24$$ g/mol) forms a face centered cubic lattice. If the edge length of the lattice is $$4\times10^{-8}$$ cm and the observed density is $$2.40 \times10^{3}$$ g cm$$^{-3}$$, then the percentage occupancy of lattice points by element X is : (Use $$N_A=6\times10^{23}$$)
An element X (atomic weight $$= 24$$ amu) forms a face-centred cubic lattice. If the edge length of the lattice is $${4\times10^{- 8}}$$ cm and the observed density is $$2.40 \times 10^{3}$$ kg m$$^{-3}$$, then the percentage occupancy of lattice points by element X is: (use $$ {N_{A}= 6\times 10^{23}}$$)
In face centred cubic unit cell, what is the volume occupied?
Packing fraction of an identical solid sphere is $$74\%$$ in:
The fraction of volume occupied by atoms in a face centered cubic unit cell is :
The neon atoms has a radius of $$160\,pm.$$ What is the edge of the unit cell of a face centered structured of neon ?
Silver crystallizes in a fcc lattice and has a density of $$10.6 \,g/cm^3$$. What is the length of an edge of the unit cell ?
There are three cubic unit cells $$A, B$$ and $$C$$. $$A$$ is FCC and all of its tetrahedral voids are also occupied. $$B$$ is also FCC and all of its octahedral voids are also occupied. $$C$$ is simple cubic and all of its cubic voids are also occupied. If voids in all unit cells are occupied by the spheres exactly at their limiting radius, then the order of packing efficiency would be