Question

An element having atomic mass 107.99mol\-1 has FCC unit cell . The edge length of unit cell 408.6pm.calculate the density of the unit cell. (Given NA=6.022×10/23 mol/-1)

Answer 1

The atomic weight of any atom can be found by multiplying the abundance of an isotope of an element by the atomic mass of the element and then adding the results together. This equation can be used with elements with two or more isotopes: Carbon-12: 0.9889 x 12.0000 = 11.8668. Carbon-13: 0.0111 x 13.0034 = 0.1443.