Lithium Lithium Lithium (from ) is a chemical element with symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the lightest metal and the lightest solid element. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. When cut, it exhibits a metallic luster, but moist air corrodes it quickly to a dull silvery gray, then black tarnish. It never occurs freely in nature, but only in (usually ionic) compounds, such as pegmatitic minerals which were once the main source of lithium. Due to its solubility
Next-to-Minimal Supersymmetric Standard Model much richer than that of the MSSM. In particular, the Higgs potential is in general no longer invariant under CP transformations; see CP violation. Typically, the Higgs bosons in the NMSSM are denoted in an order with increasing masses; that is, by formula_31, with formula_32 the lightest Higgs boson. In the special case of a CP-conserving Higgs potential we have three CP even Higgs bosons, formula_33, two CP odd ones, formula_34, and a pair of charged Higgs bosons, formula_35. In the MSSM, the lightest Higgs boson is always Standard Model-like, and therefore its production and decays are roughly known. In