Oxygen
The color of barium in the flame test is pale-apple green.
A green flame usually indicates that copper is present and is being heated. This is not harmful. Other metals such as barium also give a green flame when heated tho it is unlikely to have barium elements within a gas fire.
Boron is the element that gives a green flame when burned. Boron compounds, such as boric acid or borax, are often used to create green-colored flames in fireworks.
It is the bright hot exothermic reaction located at the gas outlet.
Chlorine gas itself does not emit a colored flame when subjected to a flame test. Instead, it will impart a green color to the flame when a sample containing chlorine (such as a chloride compound) is included in the flame test.
diborane uts toxic
A green flame on a gas stove can be caused by copper or other metal particles burning in the flame. This can happen if there is a build-up of dust or debris in the burner. It is usually safe to continue using the stove, but you may want to clean the burner to prevent this from happening.
The most rare colored flame is blue. Blue flames are typically seen in natural gas or alcohol fires, and are produced by the presence of carbon monoxide or hydrogen. Temperature and chemical composition can also affect flame color.
Boron compounds like boron chloride can produce a green flame when burned in oxygen.
A gas lamp produces light by burning a fuel, such as natural gas or propane, in a controlled flame. The heat from the flame causes the gas molecules to release energy in the form of light, creating a bright and steady source of illumination.
The bright orange color of the flame is due to the presence of sodium ions from the salt (NaCl) in the water. When heated, the sodium ions get enough energy to become excited and emit light in the form of an orange color. This phenomenon is known as flame coloration.
Barium produces a light or apple green flame when held in a hot clean burning gas flame. it could be confused with the different green flames produced by copper, boron, molybdenum, antimony, tellurium, thallium, phosphorus and others.