ऑक्सीजन का शुद्ध रूप क्या है
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Explanation:
The most plentiful element in the Earth's crust, about 46.6 percent by weight, oxygen is a nonmetallic element which, in its pure form is a colorless, odorless, tasteless gas. It's most important compound is water.
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Answer:
21percent oxygen is pure in atmosphere
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