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A diffracted x-ray beam is observed from an unknown cubic metal at angles 30.7301o, 35.6406o, 51.1984o,...

A diffracted x-ray beam is observed from an unknown cubic metal at angles 30.7301o, 35.6406o, 51.1984o, 60.9706o, 64.0327o and 75.4344o when x-ray of 0.1248 nm wavelength is used.

Find the lattice parameter (in nm) of the metal for each of the peaks.

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