Solid State Chemistry
NEET Questions

In a cube of any crystal A-atom is placed at every corner and B-atom is placed at every face center. The formula of a compound is

A compound is formed by cation C and anion A. The anions form a hexagonal close-packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is

The number of carbon atoms per unit cell of diamond unit cell is

The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behavior is a characteristic of substance forming

Structure of a mixed oxide is cubic close-packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One-fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is

A solid compound XY has a NaCl structure. If the radius of the cation is 100 pm, the radius of the anion (Y^–) will be

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca²⁺) and fluoride ion (F^–) are

On doping Ge metal with a little of In or Ga, one gets

The vacant space in bcc lattice unit cell is

For two ionic solids CaO and KI, identify the wrong statement among the following.

The second-order Bragg diffraction of X-rays with λ = 1.00 Å from a set of parallel planes in a metal occurs at an angle of 60°. The distance between the scattering planes in the crystal is

A compound formed by elements X and Y crystallizes in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the face centers. The formula of the compound is

The psychometric density of sodium chloride crystal is 2.165 × 10³ kg m^–3 while its X-ray density is 2.178 × 10³ kg m^–3. The fraction of unoccupied sites in sodium chloride crystals is

The edge length of face-centered unit cubic cells is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is

The number of octahedral void(s) per atom present in a cubic close-packed structure is

Ionic solids, with Schottky defects, contain in their structure

Schottky defect in crystals is observed when

With which one of the following elements of silicon should be doped so as to give a p-type semiconductor?

For the orthorhombic system axial ratios are a ≠ b ≠ c and the axial angles are

Which of the following statements is not correct?

Formula of nickel oxide with a metal deficiency defect in its crystal is Ni0.98O. The crystal contains Ni₂⁺ and Ni₃⁺ ions. The fraction of nickel existing as Ni₂⁺ ions in the crystal is

The intermetallic compound LiAg crystallizes in the cubic lattice in which both lithium and silver have a coordination number of eight. The crystal class is

In crystals which one of the following ionic compounds would you expect the maximum distance between centers of cations and anions?

The fcc crystal contains how many atoms in each unit cell?

Lithium metal crystallizes in a body-centered cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of lithium will be

An element (atomic mass = 100 g/mol) having a bcc structure has a unit cell edge of 400 pm. The density of the element is

A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is

A metal has an fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm^–3. The molar mass of the metal is (NA Avogadro’s constant = 6.02 × 10²³ mol^–1)

In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells?

AB crystallizes in a body-centered cubic lattice with edge length ‘a’ equal to 387 pm. The distance between two oppositely charged ions in the lattice is

The appearance of color in solid alkali metal halides is generally due to

Most crystals show good cleavage because their atoms, ions or molecules are

The number of atoms contained in an fcc unit cell of a monatomic substance is

If we mix a pentavalent impurity in a crystal lattice of germanium, what type of semiconductor formation will occur?

The correct statement regarding defects in crystalline solids is

When Zn converts from its melted state to its solid state, it has an hcp structure, then find the number of nearest atoms.

An element has a body-centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is

Glass is a

The ionic radii of A⁺ and B^– ions are 0.98 × 10^–10 m and 1.81 × 10^–10 m. The coordination number of each ion in AB is

Lithium has a bcc structure. Its density is 530 kg m–3 and its atomic mass is 6.94 g mol^–1. Calculate the edge length of a unit cell of lithium metal. (NA = 6.02 × 10²³ mol^–1)

CsBr crystallizes in a body-centered cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being 6.02 × 10²³ mol^–1, the density of CsBr is

Cation and anion combines in a crystal to form the following type of compound

The ability of a substance to assume two or more crystalline structures is called

Which is the incorrect statement?

In the fluorite structure, the coordination number of Ca²⁺ ions is

In a cube of any crystal A-atom is placed at every corner and B-atom is placed at every face center. The formula of a compound is

If NaCl is doped with 10^–4 mol % of SrCl₂, the concentration of cation vacancies will be (NA = 6.02 × 10²³ mol^–1)

Copper crystallizes in a face-centered cubic lattice with a unit cell length of 361 pm. What is the radius of the copper atom in pm?

When Zn converts from its melted state to its solid state, it has an hcp structure, then find the number of nearest atoms.