2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/83256The instability of the $^{26}$O nucleus with respect to decay through the two-neutron channel is investigated. It is shown that this isotope, unobserved in the fragmentation experiments, can exist as a narrow resonance in the system $^{24}$O+2n. A role of deformation in formation of the neutron-drip line in the region $N\sim 20$ is discussed.5 pages, LaTeXNuclear Theorytext