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Essay

Oxygen

Essay specific features

 

Issue:

Science

 

Written by:

Heather R

 

Date added:

January 1, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 860

 

Was viewed:

9161 times

 

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Essay content:

It is a nonmetal. Oxygen is part of a group called chalcogens. Chalcogens are the group of elements that form group vi of the periodic table. Chemical Info Name: Oxygen Chemical Symbol: O Atomic Mass: 15.9994 Atomic Number: 8 Density: 1.426 g/cm3 Valence: -2 Isotopes O-15 has a half life of 122...
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The isotope O-16 is stable. The isotope O-17 is stable. The isotope O-18 is stable. History Oxygen was discovered by a scientist named John Priestly in 1774. He found this by heating Mercury(II) Oxide. This then broke the mercury and oxygen apart leaving two atoms of mercury and one oxygen atom. Physical Properties Color: none Odor: none Taste: none Melting point: -218...
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