KBr has rock salt type structural arrangements and has a density of 3.70 g/cm3. The edge length of the unit cell is approximately [molecular weight of KBr = 120 g/mol]
The radii of and
ions are
and 181 pm respectively. The edge length of
unit cell is
CsBr has bcc structure with edge length 4.3. The shortest interionic distance in between Cs+ and Br− is
CsBr crystallises in a body centered cubic lattice. The unit cell length is 436.6pm. Given that the atomic mass of Cs = 133 and that of Br = 80amu and Avogadro number being 6.02 × 1023 mol−1 the density of CsBr is
How many unit cells are present in 4.0gm of crystal AB (formula mass of AB = 40) having rock salt type structure? (NA = Avogadro's no.)
A molecule A2 B(Mwt. = 166.4) occupies triclinic lattice with a 5Å,b = 8Å, and c = 4Å If the density of AB2 is 5.2 g cm−3, the number of molecules present in one unit cell is
361 videos|822 docs|301 tests
|