15. Solving a chemistry problem

15. Solving a chemistry problem

218. Determine, using the experimental data below, the structural type of the crystal lattice in which this metal crystallizes (face-centered cubic, body-centered cubic or diamond type), calculate the effective radius of the metal atom, draw a unit cell, indicate the coordination number.
Item No. Metal Density.
g/cm3 Cube edge a*1010,m
218 Nb 8.57 3.296

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