Consider the following data: isotope                  atomic mass                    abundancy% 30-X                        31.01 amu                     90.00% 31-X                      32.45 amu                      5.00 % 32-X                   33.22 amu                       5.00% calculate average atomic mass  A.) 33.50 amu B.) 31.19 amu C.) 39.01 amu D.) 32.00 amu

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.