The number of atoms present in a unit cell of a monoatomic substance with a simple cubic lattice is:

Chromium metal crystallises in a body-centred cubic $(bcc)$ lattice. The edge length of the unit cell is found to be $287 \, pm$. The atomic radius of chromium will be ............. $pm$.

Provide information about the seven crystal systems.

The unit cell with crystallographic dimensions,$a \neq b \neq c$,$\alpha = \gamma = 90^{\circ}$ and $\beta \neq 90^{\circ}$ is

The relation between axis and angles $a \neq b \neq c$ and $\alpha = \gamma = 90^{\circ}, \beta \neq 90^{\circ}$ corresponds to which crystal system?

How will you distinguish between the following pairs of terms:
$(i)$ Crystal lattice and unit cell?