Periodic Table of the Elements: Oxygen

Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
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Periodic Table of the Elements: Oxygen
Atomic Number:8
Atomic Symbol:O
 Oxygenoxygen,
gaseous chemical element; symbol O; at. no. 8; interval in which at. wt. ranges 15.99903–15.99977; m.p. −218.4°C;; b.p. −182.962°C;; density 1.429 grams per liter at STP; valence −2.
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Atomic Weight:[15.99903; 15.99977]
Electron Configuration:2 · 6
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