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Chromium metal (atomic weight = 52) has ...

Chromium metal (atomic weight = 52) has body-centred cubic structure. The unit cell of the crystal of chromium is 287pm. Calculate the radius of chromium atom and the density of chromium metal.

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The radius of a particle in the body-centred cubic unit cell,
`r=(asqrt3)/4=(287xxsqrt3)/4=124.27`pm and density, `rho=(ZxxM)/(a^(3)xxN)`, [Z = 2 in case of body-centred cubic unit cell].
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