The relative abundances of Calcium are in the table below: Isotope
Relative Abundance (96)
Calcium-40
96.9
Calcium-42
0.7
Calcium-44

2.1
A sample of 200 atoms of calcium should contain
atoms of 40 ca
atoms of 42 Ca
atoms of 44ca

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

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