Question

write a short note on discovery of oxygen( in your own sentence)​

Answer 1

Answer:

Oxygen was discovered in 1772 by a swedish chemist who obtained it by heating potassium nitrate,mercuric acid and many other substances.

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Answer 2

Answer:

An English chemist, Joseph Priestley, independently discovered oxygen in 1774 by the thermal decomposition of mercuric oxide and published his findings the same year, three years before Scheele published.