The unit cell of NaCl lattice

Important Questions on Solid State

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

An element occurring in the $\mathrm{BCC}$ structure has $12.05\times {10}^{23}$ unit cells. The total number of atoms of the element in these cells will be

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Which among the following is the most symmetrical crystal system?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

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

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Which primitive unit cell has unequal edge lengths $\left(a\ne b\ne c\right)$ and all axial angles different from ${90}^o$

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

A compound formed by elements $\mathrm{X}$ and $\mathrm{Y}$ crystallises in the cubic structure, where $\mathrm{X}$ atoms are at the corners of a cube and $\mathrm{Y}$ atoms are at the centre of the body. The formula of the compounds is

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Which among the following metals crystallises as a simple cube?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

If $\mathrm{a}, \mathrm{b}, \mathrm{c}$ are the lengths of three edges of unit cell, $\mathrm{\alpha }$ is the angle between side $\mathrm{b}$ and $\mathrm{c}, \mathrm{\beta }$ is the angle between side $\mathrm{a}$ and $\mathrm{c}$ and $\mathrm{\gamma }$ is the angle between side $\mathrm{a}$ and $\mathrm{b},$ what is the Bravais Lattice dimensions of a tetragonal crystal?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

How many crystal system are there when $\mathrm{a}\ne \mathrm{b}\ne \mathrm{c}$ and $\mathrm{a}=\mathrm{b}=\mathrm{c}$?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

In $\mathrm{F}.\mathrm{C}.\mathrm{C}.$ the cell is shared equally by how many unit cells?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

In which crystal system, the length of each edge (edge length) is same?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

In the face centered unit cell, the lattice points are present at

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

What are two types of crystal structures shown by ice at different pressures?

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

The $\mathrm{FCC}-$crystal contains how many atoms in each unit cell?

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

A compound ${\mathrm{M}}_{\mathrm{p}}{\mathrm{X}}_{\mathrm{q}}$ has cubic close packing ($\mathrm{ccp}$) arrangement of $\mathrm{X}$. Its unit cell structure is shown below. The empirical formula of the compound is

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

A match box exhibits

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

In a solid $\mathrm{AB},\mathrm{A}$ atoms are in $\mathrm{ccp}$ arrangement and $\mathrm{B}$ atoms occupy all the octahedral sites. If two atoms from the opposite faces are removed, then the resultant stoichiometry of the compound is ${\mathrm{A}}_{\mathrm{x}}{\mathrm{B}}_{\mathrm{y}}$. The value of $\mathrm{x}$ is [nearest integer]

MEDIUM

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

Polonium (atomic mass $=209$) crystallises in a simple cubic structure with a density of $9.32 \mathrm{g} {\mathrm{cm}}^{-3}$. Its lattice parameter (in $\mathrm{pm}$) is closest to

EASY

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

The parameters of the unit cell of a substance are $\mathrm{a}=2.5, \mathrm{b}=3.0, \mathrm{c}=4.0, \alpha =90°, \beta =120°\gamma =90°.$ The crystal system of the substance is :

HARD

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

$\mathrm{NaCl}$ is a $\mathrm{FCC}$ lattice where ${\mathrm{Na}}^{+}$ ions are at corner and face centre positions. Chloride ions are at edge centres and body centre positions. How many $\mathrm{NaCl}$ formula units will be in an unit cell

HARD

Chemistry>Physical Chemistry>Solid State>Crystal Lattice and Unit cells

If the angle of incidence of X-ray of wavelength $3 Å$ which produces a second order diffracted beam from the $\left(100\right)$ planes in a simple cubic lattice with interlayer spacing $a=6 Å \mathrm{i}\mathrm{s} {30}^o,$ the angle of incidence that produces a first - order diffracted beam from the $\left(200\right)$ planes is