Solid State Tes...

 The number of unit cells in 58.5 g of $$NaCl$$ is approximately:

How many units cells are there in $$ 1.00 g $$ cube shaped ideal crystal of $$ AB (Mw = 60 ) $$ which has a $$NaCl$$ type lattice?

The density of crystalline sodium chloride is 5.85 g $${cm}^{-3}$$. What is the edge length of the unit cell?

Certain quantity of metal is crystallised $$60\%$$ in ccp structure $$40\%$$ in hcp structure. What is the ratio of number of unit cells in ccp and hcp?

Salt Ab has a zinc blende structure. The radius of $$A^{2+}$$ and $$B^{2-}$$ ions are $$0.7\mathring{A}$$ and $$1.8\mathring{A}$$ respectively. The edge length of AB unit cell is:

Packing efficiency of body centred unit cell is:

The density of solid argon (Ar = 40 g / mol) is 1.68 g/mL at 40 K. If the argon atom is assumed to be a sphere of radius 1.50 x $$10^{-8}$$ cm, what % of solid Ar is apparently empty space? (use $$N_A = 6 \times10^{23}$$)

$$A_2B$$ molecules (molar mass =259.8 g/mol) crystallises in a hexagonal lattice as shown in figure. The lattice constants were $$a = 5 \mathring{A}$$ and $$ b= 8 \mathring{A}$$. If density of crystal is 5 $$g/cm^3$$ then how many molecules are contained in given unit cell? (use $$N_A= 6 \times 10^{23}$$)

The compound $${ MX }_{ 4 }$$ is tetrahedral . The number of $$X-M-X$$ angles in the compound is:

Which forms a crystal of NaCl?