An unknown solution gives a yellow-green flame test, and a

Last updated: 7/11/2022

An unknown solution gives a yellow-green flame test, and a white precipitate with ammonium carbonate, ammonium phosphate, and ammonium sulfate. The halide test produces a yellow-orange color in the upper hexane layer. Identify (a) the alkali or alkaline earth element, and (b) the halide present in the unknown solution.