The vacant space in the $bcc$ unit cell is .............. $\%$

What is the number of atoms present in the unit cells of a simple cubic,body-centered cubic,and face-centered cubic lattice of a monoatomic substance,respectively?

In the closest packed structure of a metallic lattice,the number of nearest neighbours of a metallic atom is

$A$ cubic structure is formed where atoms of element $X$ are occupied at the corners of the cube and also at the face centers. Atoms of element $Y$ are present at the body center and at the edge centers. If all the atoms are removed along a plane passing through the middle of the cube (bisecting the four edges), the formula will become

$KBr$ crystallizes in a $fcc$ lattice (similar to $NaCl$). The second nearest neighbor of $K^+$ ion and its number are:

Potassium crystallizes in a $bcc$ lattice,hence the coordination number of potassium in potassium metal is