A Salt, MY, Crystallizes in a Body-Centered Cubic Structure with a Y^-

question 58

Multiple Choice

A salt, MY, crystallizes in a body-centered cubic structure with a Y^- anion at each cube corner and an M⁺ cation at the cube center. Assuming that the Y^- anions touch each other and the M⁺ cation at the center, and that the radius of Y^- is 1.44 × 10² pm, what is the radius of M⁺?

• A) 72.0 pm
• B) 48.0 pm
• C) 105 pm
• D) 37.4 pm
• E) 59.6 pm

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