This element burns crimson in a flame test, and its salts are used to treat bipolar disorder.
TMEDA enhances substitution of this element for acidic hydrogens, and in directed ortho metallation, it is usually inserted adjacent to an ether. According to the Ireland transition state model, this element chelates both oxygens during the formation of a kinetic enolate, because its diisopropylamide salt is a strong hindered base. 12-crown-4 is specific for this element's cation. Weakly nucleophilic dialkylcuprates contain copper and this other metal, and in the reduction of carboxylic acids to alcohols, it is a counter-ion to aluminum hydride. This element burns in air to form a purplish metallic nitride. This element burns crimson in a flame test, and its salts are used to treat bipolar disorder. For 10 points, name this lightest alkali metal, with atomic number 3.
TMEDA enhances substitution of this element for acidic hydrogens, and in directed ortho metallation, it is usually inserted adjacent to an ether.
lithium [or Li]