Solid State PYQs - Last 10 Years

How are edge length '\(a\)' of the unit cell and radius '\(r\)' of the sphere related to each other in ccp structure? (Choose correct option for your answer)

How many number of tetrahedral voids are formed in \(5 \mathrm{~mol}\) of a compound having cubic close packed structure? (Choose the correct option)

What fraction of one edge centred octahedral void lies
in one unit cell of fcc?

A compound is formed by two elements A and B. The elements B forms cubic close packed structure and atoms of A occupy \(1 / 3\) of tetrahedral voids. If the formula of the compound is \(\mathrm{A}_{x} \mathrm{B}_{y}\), then the value of $$x...

Match List-I with List-II :

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Copper crystallises in fcc unit cell with cell edge length of 3.608 \(\times\) 10\(-\)8 cm. The density of copper is 8.92 g cm\(-\)3. Calculate the atomic mass of copper.

Choose the correct statement:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In a particular point defect, an ionic solid is electrically neutral, even if few of its cations are missing from its...

Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are :

The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is :

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

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

Iron exhibits bcc structure at room temperature.
Above 900°C, it transforms to fcc structure. The
ratio of density of iron at room temperature to
that at 900°C (assuming molar mass and atomic
radii of iron remains constant with temperature)...

Which is the incorrect statement?

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

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

The ionic radii of A+ and B\(-\) ions are 0.98 \(\times\) 10\(-\)10 m and 1.81 \(\times\) 10\(-\)10 m. The coordination number of each ion in AB is

A given metal crystallises out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, what is the radius of one atom?

The correct statement regarding defects in crystalline solids is

The vacant space in bcc lattice unit cell is

If \(a\) is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be