A cube made of Pt has an edge length of 1.0 cm cubed. b) The spherical Pt atoms in the cube cannot fill all of the available space. Only 74% of the space in the cube is taken up by Pt atoms, what is the radius in picometers of the Pt atom?
Density of Pt: 21.45 g/cm cubed
Mass of single Pt atom: 3.240 x 10 ^-22 g
Volume of a sphere of a radius r: (4/3) pi r^3