Metal chromium crystallizes in a body centered cubic

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1) The metal chromium crystallizes in a body centered cubic unit cell with one atom per lattice point. When X-rays with λ = 0.7107 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) chromium crystal is observed at an angle θ = 14.14°. If the spacing between these planes corresponds to the unit cell length (d = a), calculate the radius of a(n) chromium atom.

2) The metal nickel crystallizes in a face centered cubic unit cell. When X-rays with λ = 0.8302 Å are used, the second-order Bragg reflection from a set of parallel planes in a(n) nickel crystal is observed at an angle θ = 13.63°. If the spacing between these planes corresponds to the unit cell length (d = a), calculate the edge length of the nickel unit cell.

Reference no: EM132509015

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