No, oxygen does not give Lassaigne's test.
Understanding Lassaigne's Test
Lassaigne's test is a chemical test used to detect the presence of certain elements, primarily nitrogen (N), halogens (Cl, Br, I), and sulfur (S), in organic compounds. The test involves fusing a small amount of the organic compound with sodium metal in a test tube. The resulting fused mass is then dissolved in water, and the solution is tested for the presence of the elements mentioned above.
Why Oxygen Doesn't Give Lassaigne's Test
Oxygen is a highly electronegative element and does not form stable ionic compounds with sodium. When an organic compound containing oxygen is fused with sodium, the oxygen atom is not incorporated into the resulting sodium salt. Therefore, no characteristic reactions for oxygen are observed in the Lassaigne's test.
In Conclusion
Lassaigne's test is specifically designed to detect nitrogen, halogens, and sulfur in organic compounds. Oxygen, being a highly electronegative element, does not participate in the reactions involved in this test.
