who discovered oxygen.
1)Dalton
2)Priestely
3)Kanad
4) Robert Hooke
Answers
Priestley discovered oxygen.
Option (2).
Explanation:
- Oxygen is an element belongs to p-block.
- The atomic number of oxygen is 8 and its electronic configuration is 2, 6.
- It has 6 valence electrons in the outermost orbital. It is an oxidizing agent and a non-metal.
- It is the 3rd most abundant element in the universe.
- One of the contributor and discoverer of the oxygen gas is Joseph Priestley.
- Oxygen is produced from 'electrolysis of water'.
- Large amounts can be extracted from 'liquefied air through fractional distillation'.
Learn more about oxygen
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Explain briefly how the amount of oxygen in air does not change, inspite of the fact that a large amount of it is used in combustion and respiration?
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Oxygen was discovered by Priestely in 1774. He was an french scientist and first time successfully produced oxygen from mercuric oxide. When mercuric oxide is heated at high temperature in furnace it lead to discovery of colourless and odourless gas known as oxygen.
He called this gas produced as 'dephlogisticated gas' and the name was given by Antoine Lavoisier.Oxygen is third most abundant gas and makes 21% of earth atmosphere, the gas is the supporter of combustion and is required by every living being.
In modern days oxygen is produced from electrolysis of water or by heating potassium chlorate (KClO3). Large amounts can be extracted from liquefied air through fractional distillation.