What will be the number of unit cell is 938 amu of sodium chloride ?
Sodium chloride crystallizes in a face centred cubic structure which has 4 formula units of sodium chloride molecule.
Formula mass of NaCl = 23 + 35.5 = 58.5 amu
Mass of one unit cell = 58.5 4 = 234 amu
Number of unit cells in 938amu = = 4.008 or 4 unit cells
Formula mass of NaCl = 23 + 35.5 = 58.5 amu
Mass of one unit cell = 58.5 4 = 234 amu
Number of unit cells in 938amu = = 4.008 or 4 unit cells