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Abstract: We have calculated the molecular geometries, association energies, and charge distribution of the noble-gas containing anions F−(NgO) n (Ng=He, Ar, Kr; n =1–6). The geometries of these anions were found to be highly symmetric. The predicted ranges of association energies were 19–39, 37–134, and 58–231kcal/mol for Ng=He, Ar, and Kr, respectively. The stability of these anions was due to the charge-induced formation of the Ng–O bonds. As the size of the system increases, the charge separation along the Ng–O bond decreases, while the fluorine atom remains fully charged. [Copyright &y& Elsevier]