The number of atoms present in a simple cubic unit cell of a molecular substance is.....

How many total constituent particles are present in a simple cubic unit cell?

How many "nearest" and "next nearest" neighbours,respectively,does potassium have in a $bcc$ lattice?

What is the coordination number of any particle in the $fcc$ (face-centered cubic) crystal lattice?

$A$ binary compound $(A^{+} B^{-})$ has a zinc blende structure where $B^{-}$ ions form the lattice and $A^{+}$ ions occupy $25\%$ of the tetrahedral voids. What is the formula of the compound?

If the distance between $Na^{+}$ and $Cl^{-}$ ions in sodium chloride crystal is $X \ pm$, the length of the edge of the unit cell is