Which of the following primitive cells show the given parameters?
$a \neq b \neq c, \alpha = \beta = \gamma = 90^{\circ}$

Which of the following is true for $SnO_2$?

What is the total number of Bravais lattices present for different crystal systems?

$Assertion (A)$: White tin is an example of a tetragonal system. $Reasoning (R)$: For a tetragonal system, $a=b=c$ and $\alpha=\beta=\gamma \neq 90^{\circ}$. The correct answer is

Give the significance of a 'lattice point'.

$a \ne b \ne c$,$\alpha \ne \beta \ne \gamma \ne 90^{\circ}$ represent: