Solid State Tes...

Select right expression for determining Packing fraction (P.F.) of NaCl unit cell (assume ideal), if ions along an edge diagonal are absent ?

CsBr crystallises in a body centred cubic lattice.The until cell length is 436.6pm.Given that the atomic mass of Cs=133 and that of Br=80 amu and Avogadro number being $$ 6.02\times { 10 }^{ 23 } { mol }^{ -1 }$$,the density of $$CsBr$$ is:

An element crystallizing in the three Bravais Cubic lattices, the ratio of densities $$ \rho_{P}: \rho_{1}: \rho_{F}$$ is:

Given length of side of hexagonal unit cell is $$\dfrac { 100 }{ \sqrt { 2 }  } $$ pm. The volume of hexagonal unit cell is (in pm$$^{ 3 }$$):

A metallic element exist as cubic lattice Each edge of the unit cell is $$4.0 \mathring{A}$$ .The density of the metal is $$6.25 g/cm^3$$.How many unit cells will be present in $$100 g$$ of the metal?

In FCC crystal, which of the following shaded planes the following type of arrangement of atoms

Crystalline allotrope of silicon has:

An element exists as hexagonal close packed structure as well as cubic closed packed structure. In which case the element would have higher density?

Maximum possible numbers of two dimensional and three dimensional lattices are respectively __________.

The close-packing sequence ABAB____represents: