What is the shpae of tthe unit cell of a cubic and a hexagonal crystal system?

Name the seven crystal systems.

An element with density 10 g cm^(-3) forms a cubic unit cell with edge length of 3xx10^(-8) cm.What is the nature of the cubic unit cell if the atomic mass of the element is 81 g mol^(-1)

The length of the unit cell edge of a body centred cubic metal crystal is 352 pm. Calculate the radius of an atom of the crystal?

How many atoms are there in a unit cell of a metal crystallizing in fcc structure?

A Metal crystallizes in fcc lattice and the edge of the unit cell is 620 pm. The radius of metal atom is

Arrange simple cubic, body centred cubic, face centred cubic and hexagonal close packing in the increasing order of packing efficiency.

Density of a unit cell is respresented as rho = (" Effective no. of atoms (s)" xx "Mass of a unit cell ")/("Volume of a unit cell ")=(Z.M)/(N_(A).a^(3)) where , mass of unit cell =mass of effectuive no . of atoms(s) or ion (s). M= At . mass// formula N_(A) = Avogadro' s no . rArr 6.0323 xx 10^(23) a= edge lemght of unit cell The density of KBr is 2.75 g //cm^(-3) . The length of the edge of the unit cell is 645 pm .To which type of cubic crystal , KBr belongs ?