Solid State Tes...

If the co-ordination number of an element in its crystal lattice is 8, then packing is :

In a simple cubic cell, each point on a corner is shared by:

The available space occupied by spheres of equal size in three dimensions in both hcp and ccp arrangement is:

For an orthorhombic system, axial ratios are $$a\neq b\neq c$$ and the axial angles are:

An element crystallizes in a structure having a fcc unit cell with edge length $$200$$ pm. Calculate its density (in g cm$$^{-3}$$) if $$200$$ g of this element contain $$24\times10^{23}$$ atoms.

Which of the following is a primitive unit cell?

The more efficient mode of packing of identical atoms in one layer is :

A tetrahedral void in a crystal implies that:

A metallic crystal crystallizes into a lattice containing a sequence of layers AB AB AB.... . Any packing of spheres leaves out voids in the lattice. What percentage of the volume of this lattice is empty space?

The number of octahedral sites in a cubical close packed array of $$N$$ spheres is :