All isotope mass numbers are possible and God (if Xe/Fay(e) exists) loves them all. The mass number is a spectrum from negative to positive to infinity includin

All isotope mass numbers are possible and God (if Xe/Fay(e) exists) loves them all. The mass number is a spectrum from negative to positive to infinity including fractions. Any claim otherwise erases the existence of isotopes which have yet to be "discovered" by white male "scientists". (Check and mate.)