Which of the following is transparent?

Which of the following has 1.54 A^o bond length throughout the crystal?

Increased ______ causes the carbon atoms to splits in diamond.

The defect which is caused  if some of the lattice  points are unoccupied are called 

How many carbon atoms surrounded each carbon atom in diamond structure?

An example of metal excess defects  is

The Braggs equation is

The semi conductors which exhibit conductivity due to the flow of excess negative electrons are called 

The conductivity due to the positive holes are called

  ______________ defects appears generally in ionic crystal in which the positive and negative ions donot differ much in size.