What flame colour is produced by barium ions in a flame test? (A) Red (B) Blue (C) Green (D) Orange - HSC - SSCE Chemistry - Question 4 - 2009 - Paper 1

Barium ions typically produce a green flame when subjected to a flame test. This distinct color results from the excitation of the barium ions, which emit light at specific wavelengths. In practical terms, when barium compounds are ignited, the characteristic green color is an observable result that aids in identifying the presence of barium.