Isotope gaps

A flow measured in becquerels that does not say which isotope it is. An activity has to be an activity of something; without the isotope the flow cannot be converted, characterised or compared.

Why says which kind of gap it is. label_is_not_a_nuclide_name is an aggregate or an element and is the expected outcome; no_nuclide_at_that_mass_number means the element name is wrong and a correction can be written; no_row_for_isomeric_state and the check names are a disagreement this project will not resolve by guessing.