Check your quantum prediction for the case: θ = 0, φ = π/4, θ′ = π/2, φ′ = 3π/4. You should show that |B| = 2√2. Conclusion: QM and Local Hidden Variables give different predictions for a simple entangled state. Experiment needs to check which is right.

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).