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pradeep negi
Posted 6 days ago pradeep negi

the money that you make when you sell something for more than it cost you

pradeep negi
Posted 9 days ago pradeep negi

Seventeen elements are generally classified as nonmetals; most are gases (hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, krypton, xenon and radon); one is a liquid (bromine); and a few are solids (carbon, ph...

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Mitesh Sharma
Posted 15 days ago Mitesh Sharma

Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well...

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