ATOMS IN THE ANIONIC DOMAIN, Z< N

@article{Gil2013ATOMSIT,
  title={ATOMS IN THE ANIONIC DOMAIN, Z< N},
  author={Gabriel Gil and A. S. Rosado Gonz{\'a}lez},
  journal={Modern Physics Letters B},
  year={2013},
  volume={27},
  pages={1350178}
}
We study atoms with N electrons, and nuclear charge Z. It is well known that the cationic regime, Z > N, is qualitatively described by Thomas–Fermi theory. The anionic regime, Z < N, on the other hand, is characterized by an instability threshold at Zc ≲ N-1, below which the atom spontaneously emits an electron. We compute the slope of the energy curve at Z = N - 1 by means of a simple model that depends on the electron affinity and the covalent radius of the neutral atom with N - 1 electrons… 
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