An atomic substance \(A\) of molar mass \(12 g mol ^{-1}\) has a cubic crystal structure with edge length of \(300 pm\).…

An atomic substance \(A\) of molar mass \(12 g mol ^{-1}\) has a cubic crystal structure with edge length of \(300 pm\). The no. of atoms present in one unit cell of \(A\) is_______ (Nearest Integer) Given the density of \(A\) is \(3.0 g mL ^{-1}\) and \(N _{ A }=6.02 \times\) \(10^{23} mol ^{-1}\)

[JEE Main 2023, 11 Apr (Shift 1)]