Question

If one atom of an element x weighs 2.107 Ã10^-22g .what is the atomic weight of x?

Answer 1

mass of one atom = 2.107×10⁻²²g.

Then atomic weight of x = 2.107×10⁻²² × 6.022×10²³g

                                         = 12.642×10

                                         x=126.4g(Iodine)