Solid State Tes...

Iron occurs as bcc as well as fcc unit cell. If the effective radius of an atom of iron is $$124$$ pm, compute the density (in g cm$$^{-3}$$) of iron in bcc and fcc respectively :

An element A (atomic weight $$= 100$$ amu) having bcc structure has unit cell edge length of $$400$$ pm. Calculate the density of A.

Which one is an amorphous solid?

A unit cell of sodium chloride has four formula units. The edge of length of the unit cell is $$0.564$$ nm. What is the density (in g cm$$^{-3}$$) of sodium chloride?

Which of the following is not a crystalline solid?

The lattice parameters,  $$a\neq b\neq c$$  and $$\alpha=\gamma=90^{\circ},\,\beta\neq 90^{\circ}$$ represents a :

Which of the following is an amorphous substance?

Potassium crystallizes in a body-centered cubic lattice with edge length aequal to 5.2 $$\mathring A$$ , what is the calculated density (in g cm$$^{-3}$$) of crystalline potassium ?

The most unsymmetrical crystal system is:

A pseudo solid is: