You Are Given a Small Bar of an Unknown Metal

question 47

Multiple Choice

You are given a small bar of an unknown metal, X. You find the density of the metal to be 10.5 g/cm³. An X-ray diffraction experiment measures the edge of the unit cell as 409 pm. Assuming that the metal crystallizes in a face-centered cubic lattice, what is X most likely to be?

• A) Ag
• B) Pt
• C) Rh
• D) Pb
• E) none of these

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