On Sat, Mar 2, 2013 at 5:39 PM, Warren Smith <warren.wds@gmail.com> wrote:
QUESTION: what is the most negative charge f(N) that can be put (stably) on an N-atom molecule for small values of N?
E.g. sulfite (SO3) or carbonate (CO3) each with -2 charge both show f(4)>=2, assuming this ion actually is stable in isolation in vacuum. Arsenite AsO3 with charge -3 shows f(4)>=3 assuming same.
Possibly relevant: http://oeis.org/A180638 "Phan Thanh Nam's upper bound on the number of non-relativistic electrons bound to a nucleus of charge n." http://arxiv.org/abs/1009.2367 Phan Thanh Nam, New bounds on the maximum ionization of atoms , arXiv:1009.2367, Sep 14, 2010. limit: 1.22z + 3z^(1/3) where z is the proton count http://pra.aps.org/abstract/PRA/v29/i6/p3018_1 E. H. Lieb, Bound on the maximum negative ionization of atoms and molecules, Phys. Rev. A 29, 3018-3028 (1984). limit: 2z+1, but superseded by Nam -- Robert Munafo -- mrob.com Follow me at: gplus.to/mrob - fb.com/mrob27 - twitter.com/mrob_27 - mrob27.wordpress.com - youtube.com/user/mrob143 - rilybot.blogspot.com