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college chemistry

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Rubidium metal, Rb, crystallizes in a body-centered cubic arrangement. What is the radius of one atom of Rb, if its density is 1.5320 g/cm3?

  • college chemistry -

    2 atoms/unit cell
    mass unit cell = 85.47*2/6.022e23 =?
    volume = mass/density = ?
    a^3 = volume
    Solve fora.
    Then 4r = a(3)^1/2
    Solve for r.

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