AB crystalizes in a bcc lattice. If the distance between two oppositely charged ions in the lattice is 335 pm, then the edge length of it (in pm) is
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For a bcc lattice:
\[
\text{Nearest neighbour distance}
=\frac{\sqrt3\,a}{2}
\]
and
\[
a=\frac{2d}{\sqrt3}
\]
where \(d\) is the distance between nearest neighbouring ions.