Solid State Tes...

Edge length of a cube is 400 pm, its body diagonal would be

ZnS crystallises in a cubic structure in which $$Zn^{2+}_{ions}$$ occupy half of tetrahedral voids while $$S^{2 -}$$ ions occupy all corners and face centres. Hence the number of ZnS molecules present in 4 unit cells are 

Which of the following has highest lattice energy?

The pycnometric density of sodium chloride crystal is $$2.165 \times 10^3$$ $$kg m^{-3}$$ while its X-ray density is $$2.178 \times 10^3 kg m^{-3}$$. The fraction of the unoccupied sites in sodium chloride crystal is 

How many unit cells of KBr are present in a 1.00$${ mm }^{ 3 }$$  grain of KBr,KBr crystallizes in NaCl type of crystal lattice and its density is 2.75g/$${ cm }^{ 3 }$$?

The number of lattice points at the centre of the primitive unit cell is

If the radius of metal atom is 1.00 angstrom and  its crystal structure is simple cubic, then what is the volume of one unit cell?

A metallic element crystallises in face centred cubic structure. If the radius of metal ion is $$0.92 \mathring (A)$$ the edge length of the unit cell of the crystal is

Which of the following is correct?

The formula of $$ZnO$$ crystal after heating is ________.