Iron Oxide (FeO) Has The Rock Salt Crystal Structure And A Density Of 5.70 G/Cm3. The Atomic Weights Of Iron And Oxygen Are 55.85 G/Mol And 16.00 G/Mol, Respectively. (A) Determine The Unit Cell Edge Length. Nm (B) Determine The Unit Cell Edge Length From The Radi In The Table Below Assuming That The Fe2+ And O2 Ions Just Touch Each Other Along The Edges. Nm

 

Iron oxide (FeO) has the rock salt crystal structure and a density of 5.70 g/cm. The atomic weights of iron and oxygen are 55.85 g/mol and 16.00 g/mol, respectively. (a) Determine the unit cell edge length. nm (b) Determine the unit cell edge length from the radii in the table below assuming that the Fe2+ and 02- ions just touch each other along the edges. nm Cation Ionic Radius (nm) Anion Ionic Radius (nm) Mg2+ Fe2+ 0.072 0.077 CI 02- 0.181 0.140 Na+ 0.102