Given that Pt has an FCC crystal structure, density (p) = 21.45 g/cm², atomic mass (Ap;)= 195.084 g/mol, Avogadro constant (NA) - 6.022 × 1023 atoms/mol. Calculate the radius of the Pt atom.

14. In an ideal hexagonal closed packed system, if the atomic radius of the atom was 0.112 nm, write down the three digit value of the lattice parameter cin nm unit Enter your answer

Consider a unit cell with lattice dimensions a, b, and c in the x-, y and z directions. Which of the following sets of Miller indices can represent a crystallographic plane with intercepts of b and (c/4) along the y- and z-axes respectively? (more than one answer is possible for this question. marks will only be awarded for the question if all the correct options are selected (i.e. 'all or nothing' marking scheme). a. b. C. d. (214) (421) (114) e. (412)

Consider two hypothetical metallic crystal structures A and B. A has a simple cubic and B a fcc lattice structure. Both have the same unit cell volume. The Atomic Packing Factor for A is 0.520 and that for B is 0.740. What is the ratio of the fcc to simple cubic atomic radii?

Please help in both Qs will provide surely good ratings for both solution. Thank u

Calculate the LPF for [101] in a FCC crystal.

Draw the following crystalline planes in a separate unit cell:

Estimate the density of platinum and lead from their lattice parameters at room temperature. Both are FCC. Compare the theoretical density with experimental values. Which is closer? Why? For platinum A=192.09, Avogadro number =6.02x1043, a=3.9239 Angstrom. Experimental density of Pt = 21.47. For lead A=207.2, and a=4.9502Angstrom.

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5. Calculate Phkl for the (100), (110), and (111) planes of a monoatomic fcc crystal.