For a cubic crystal, the face diagonal is `4.25 oversetcircA`. Calculate the face length?

A metal crystallines into two cubic phases, face centred cubic (fcc) and body centred cubic (bcc), whose unit cell lengths are 3.5 oversetcircA respectively. Calculate the ratio of densities of fcc and bcc.

An element (density 7.2 gcm^-3) crystallizes in a body centred cubic structure having its unit cell edge length 2.88oversetcircA . Calculate the number of atoms present in 156 g of the element.

The radius of curvature of each face of a biconcave lens made of glass of refractive index 1.5 is 30 cm. Calculate the focal length of the lens is air.

Fill ups In a body centred cubic crystal, the nearest neighbour distance is………….times the edge of the crystal and in a face centred cubic crystal, the nearest neighbour distance is………………..times the edge of the crystal.

Silver having atomic mass 107.87 crystallizes in faces centred cubic structure. If density is 10.76"gcm"^(-3) calculate the edge length of unit cell.

Lithium borohydride (LiBH_4) crystallizes in an orthorhombic system having 4 molecules per unit cell. The unit dimesions are: a=6.81 oversetcircA , b=4.43 oversetcircA and c=7.17 oversetcircA . Cacluate the density of the crystal (At. Mass of Li=7, B=11, H=1u).

A ray of light incident at 49^@ on the face of an equilateral prism passes symmetrically.Calculate thr efractive index of the material of the prism.

Sodium metal crystallizes in a body centre cubic lattice with a unit cell edge 4.29 oversetcircA . The radius of sodium atom is approximately

Can we construct a cube whose length of main diagonal is 13sqrt3cm and diagonal of the face is 12sqrt2 cm?