KBr crystallises in face-centered cubic (fcc) crystals. The density and formula mass of KBr crystal are `2.65 g cm^(-3)` and `119 g mol^(-1)` respectively. Find the distance between `K^+ and Br^-` ions in KBr crystal.

(i) What is ferromagnetic substance? (ii) KBr crystallises in face-centred cubic (fcc) crystals. The density and formula mass of KBr crystal are 2.65g*cm^(-3) and 119g*mol^(-1) respectively. Find the distance between K^(+)andBr^(-) ions in KBr crystal. or, (i) Which kind of defect in ionic crystal does not alter the density? (ii) An element X has atomic mass 60g*mol^(-1) and density 6.23g*cm^(-3) . The edge length of its unit cell is 400 pm. Identify the type of the unit cubic cell. Calculate the radius of X atom.

KBr crystallises in a face-centred cubic crystal. The density of KBr crystal is 2.65g*cm^(-3) . If formula mass of KBr is 119g*mol^(-1) , then find the distance between K^(+)andBr^(-) in KBr crystal.

Copper crystallises in a face-centred cubic lattice. Molar mass and density of copper are 63.5g*mol^(-1)and8.9g*cm^(-3) respectively. Calculate the edge length of a unit cell in copper lattice and the radius of a copper atom.

A Metal crystallizes into two cubic phases, face-centred cubic and body centred cubic whose unit cell lengths are 3.5overset(0)A and 3.0overset(0)A respectively. Calculate the ratio of the densities of fcc and bcc crystals.

A metal (atomic mass = 40) has a body centred cubic crystal structure. If the density of the metal is 4.50 g cm^(-3) , calculate the volume of the unit cell.

Polonium crystallises in a primitive cubic structure. The radius of polonium atom and the density of polonium are 1.68Å and 9.27g*cm^(-3) respectively. If the atomic mass of polonium is 210g*mol^(-1) , then find the value of Avogadro's number.

KF has NaCl structure. What is the distance between K^(+) and F^(-) in KF, if the density is 1.5g cm^(-3) ?

The values of observed and calculated molecular mass of Ca(NO_3)_2 are 65.4 and 164 g mol^-1 respectively. The degree of dissociation of Ca(NO_3)_2 will be

Thermal capacities of mercury and glass of the same volume are equal. Densities of mercury and glass are "13.6 g.cm"^(-3) and "2.5 g.cm"^(-3) respectively. If the specific heat capacity of mercury is "0.03 cal.g"^(-1).^(@)C^(-1) . Find that of glass.

A metal crystallizes into two cubic phases, face-centred cubic and body-centred cubic, which have unit cell lengths 3.5 and 3.0 A , respectively. Calculate the ration of densities of fcc and bcc.