From the table above we can see that both atoms have the same proton number.
Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.
The one that would explain why the two groups of scientists got different results is : They had different specialties and interpreted their data differently Probably one analyze it with x theory and the other use y theory
