pradeep negi
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Seema Kumari
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Posted 4 year ago Seema Kumari

The credit for discovering oxygen is now shared by three chemists: an Englishman, a Swede, and a Frenchman. Joseph Priestley was the first to publish an account of oxygen, having made it in 1774 by focussing sunlight on to mercuric oxide (HgO), and collecting the gas which came off.

Yogyata Negi
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Posted 4 year ago Yogyata Negi

Joseph Priestley

Mitesh Sharma
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Posted 4 year ago Mitesh Sharma

The credit for discovering oxygen is now shared by three chemists: an Englishman, a Swede, and a Frenchman. Joseph Priestley was the first to publish an account of oxygen, having made it in 1774 by focussing sunlight