Information on mass chains and nuclides available on this website:

WWW TUNL

A study of this nucleus via the ²⁴Mg(³He, ⁸Li)¹⁹Na reaction at E(³He) = 76.3 MeV leads to an atomic mass excess of 12.928 ± 0.012 MeV for ¹⁹Na; it is then unstable with respect to breakup into ¹⁸Ne + p by 320 ± 13 keV. An excited state at E_x = 120 ± 10 keV is also reported (BE75L). See also (78AJ03, GU78D, BE79A).