Exact definition of nuclide
The term 'metastability' is used in different contexts e.g. atomic energy levels, nuclear energy levels (which is what I am alluding to) and some electronic circuits.
I would just like to firm up on what is the precise definition of 'nuclide'? Is it sufficient...
The ground state of the isotope of Technetium that has a mass number of 99 is denoted by Tc-99. The metastable state is denoted by Tc-99m. Are these considered to be two different nuclides, or just two states of the same nuclide?
(I suspect that the definition of a nuclide takes into account...