author: john horst

... Electrons fill the innermost shells of an atom first, then the outer shells ... shell holds 8. The third can hold 18, but a stable configuration is reached ... electron in its outer shell, forms only one bond, such that its outermost ...

... male rats at a LOAEL of 94 mg/kg/d Key study Kociba, et al. (1974) Kociba, et al. (1974) Uncertainty factor ... male rats Atrophy of the olfactory epithelium in ... 1,000 (UFA = 3, UFH = 10, UF L 300 (UFA = 3, UFH = 10, UF L = 10) = 10, UFD ...