An element X burns with a briliant blue flame in the presence of oxygen to form Y.Y turns acidified potassium dichromate paper green. Identigy X and Y.

An element X burns with a briliant blue flame in the presence of oxyge

1.	An element X burns with a briliant blue flame in the presence of oxygen to form Y.Y turns acidified potassium dichromate paper green. Identigy X and Y.
Answer» Nitrogen, nitrogen dioxide Sulphur, sulphur dioxide Phosphorus, phosphorus pentoxide Sodium, sodium oxide Solution :Sulphur is the NONMETAL which burns with burns with a blue coloured flams. `SO_(2)` turns orange coloured `K_(2)Cr_(2)O_(7)` GREEN due to the formation of `Cr_(2)(SO_(4))_(3)`