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Oxygen - Wikipedia


Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal ...

Chemical Elements.com - Oxygen (O)


Name: Oxygen Symbol: O Atomic Number: 8. Atomic Mass: 15.9994 amu. Melting Point: -218.4 °C (54.750008 K, -361.12 °F) Boiling Point: -183.0 °C (90.15 K, ...

Why is oxygen in chemical equations written as O2, when the ...


For instance: alkane+O2→CO2+H2O+energy. Why is it not simply written as ... Oxygen is written as O2 when there are two oxygen atoms in the molecule.

What is Oxygen? - Site Index


Info about the element Oxygen includes the definition, classification, history, discovery, ... The Atomic Number of this element is 8 and the Element Symbol is O.

Isotopes and Nuclear Symbols - Worked Chemistry Problem


This worked problem demonstrates how to write nuclear symbols for isotopes of a given element. Problem Write the nuclear symbols for three isotopes of oxygen ...

Properties of Oxygen - Boundless


An allotrope of oxygen (symbol O 3) having three atoms in the molecule instead of the usual two; it is a blue gas, generated from oxygen by electrical discharge; ...

BBC - GCSE Bitesize: Word and symbol equations


Copper and oxygen are the reactants, and copper oxide is the product. Symbol equations. Symbol equations give the symbols and molecular formulae of the ...

Oxygen Facts - Air, Gas, Atom, Uses, Properties, Water, Ozone ...


Oxygen is an element with the chemical symbol O and atomic number 8. ... Oxygen is essential to human life, it is found in the air we breathe and the water we ...

Oxygen | Define Oxygen at Dictionary.com


Oxygen definition, a colorless, odorless, gaseous element constituting about ... Symbol: O; atomic weight: 15.9994; atomic number: 8; density: 1.4290 g/l at 0°C ...

Chemical Symbols and Chemical Reactions


You will have to learn these, and other, chemical symbols for the terminal GCSE exam. For the other ... What is the chemical symbol for oxygen ? What is the ...

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What is the chemical symbol for the element oxygen? | Reference.com


The chemical symbol for oxygen is "O." Oxygen is number 8 on the periodic table of the elements, and it is part of the chalcogen...



Oxygen is an element and as such is abbreviated by the chemical symbol O; Oxygen as a gas consists of two (2) elemental atoms of oxygen.forming a molecule ...

Oxygen»the essentials [WebElements Periodic Table]


While about one fifth of the atmosphere is oxygen gas, the atmosphere of Mars contains only about ... The symbol used by Dalton for oxygen is shown below.