there are 5 naturally occurring isotopes of the element zinc. the relative abundance and mass of each are as follow
64
30zn=48.89% 63.929 amu
66
30zn=27.81% 65.926
67
30zn=4.11% 66.927
68
30zn = 18.57% 67.925
70
30zn = 0.62% 69.925
find the average atomic mass of zinc
is it 0.4889(63.929)+0.2781(65.926) ....and then divide by 5 or 1?i am not sure .
1 answer
divide by the sum of the abundances, 1.0
1 answer