List of top Chemistry Questions on Crystal Structures

The relation between radius of sphere and edge length in body centered cubic lattice is given by formula:

Given below are two statements:
Statement I: To form interstitial alloys, the radius ratio of smaller atom/larger atom should be in the range 0.414-0.732.
Statement II: Two different metals having metallic radii differing only by 10% but similar crystal structures can form a good alloy.
In the light of the above statements, choose the most appropriate answer from the options given below:

An element has a cubic structure with a cell edge of 288 pm. The density of the element is $7.2~g~cm^{-3}$. 208 g of the element has $24.16\times10^{23}$ numbers of atoms. The unit cell of this cubic structure is ________.

The radius of a calcium ion is 94 pm and of the oxide ion is 146 pm. The possible crystal structure of calcium oxide will be

A atom form F.C.C. lattice with density d = 8.92 gm/ml and edge length a=3.6 × 10^-8 cm then find the molecular mass of atom in a.m.u. ?

Oxide ion form H.C.P. lattice & Al³⁺ Occupies \(\frac{2}{3}\) of octahedral void then find the formula of compound :

A solid AB has NaCl structure. If the radius of cation A⁺ is 170 pm, then the maximum possible radius of the anion B^- is