Copper crystallises in face-centred cubic lattice and has a density of $8.930\; g\; mol^{-3}$ at 293 K. Calculate the edge length of unit cell. [At. mass of Cu = 63.5 a.m.u, Avogadro's constant NA = 6.02 x 1023].

Question

$\begin{array}{1 1} (a) \;340\; pm \\ (b)\;360\; pm \\ (c)\; 350\; pm \\ (d)\;310 \;pm \end{array}$