Calculate the radius ratio for CaO if the ionic radii of Ca2 andO2– are 100 pm and 140 pm, respectively.
Based on the radius ratio above, what is the expectedcoordination number of CaO? The range of radius ratios for eachcoordination number is given in parentheses.
If the density of solid iron is 7.87 g/cm3, what is the packingefficiency of Fe if it adopts a body-centered cubic unit cell? Themolar mass of Fe is 55.847 g/mol.
Determine the empirical formula of the compound with a crystalstructure where beryllium ions occupy all of the tetrahedral holesin a cubic close-packed (ccp) array of carbon anions.
Determine the empirical formulaof the compound with a crystal structure where boron ions occupyone-half of the tetrahedral holes in a cubic close-packed (ccp)array of nitrogen anions.
Determine the empirical formula of the compound with a crystalstructure where silver ions occupy all of the octahedral holes in acubic close-packed array of chlorine anions.
