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Lithium 150 mg. Lithium (Eskalith Â® , Eskalith CR Â® , Lithobid Â®) is a medication used for the treatment of bipolar disorder. It is available by prescription only and comes in several different forms and strengths, including:1  Lithium carbonate 150 mg capsules. Lithium carbonate 300 mg tablets. 2  Lithium carbonate 300 mg extended-release tablets (Lithobid). 3  Lithium carbonate 450 mg extended-release tablets (Eskalith CR). 4  Lithium citrate syrup, containing 8 mEq lithium per 5 mL, which is equivalent to 300 mg lithium carbonate per 5 mL or per teaspoonful.
The 1 s subshell cannot hold 3 electrons (because an s subshell can hold a maximum of 2 electrons), so the electron configuration for a lithium atom cannot be 1 s. Two of the lithium electrons can fit into the 1 s subshell, but the third electron must go into the second shell.The second shell has two subshells, s and p, which fill with electrons in that order. The 2 s subshell holds a maximum of 2 electrons, and the 2 p subshell holds a maximum of 6 electrons.Because lithiumâs final electron goes into the 2 s subshell, we write the electron configuration of a lithium atom as 1 s 2 s.he 2 s subshell holds a maximum of 2 electrons, and the 2 p subshell holds a maximum of 6 electrons. Because lithiumâs final electron goes into the 2 s subshell, we write the electron configuration of a lithium atom as 1 s 2 s.