Oxidation state

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Allison Young 1K
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Joined: Fri Sep 29, 2017 7:06 am

Oxidation state

Postby Allison Young 1K » Sat Feb 24, 2018 8:14 pm

Is the oxidation number of molecules like O2 and H2 just 0?

Andres Reynoso 1J
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Joined: Fri Sep 29, 2017 7:06 am

Re: Oxidation state

Postby Andres Reynoso 1J » Sat Feb 24, 2018 8:37 pm

In short, yes.
The oxidation number represents the number of electrons that an element can lose (if negative) or gain (if positive), relative to the electronegativity of any other element is in combination with. Because O2 and H2 have the same electronegativity, respectively, their oxidation numbers are 0.

Cassandra Mullen 1E
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Re: Oxidation state

Postby Cassandra Mullen 1E » Sat Feb 24, 2018 9:44 pm

The uncombined diatomic elements have an oxidation state of 0. You can also observe that there is no superscript indicating a charge on the molecule.

Jennifer Ho 1K
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Re: Oxidation state

Postby Jennifer Ho 1K » Sun Feb 25, 2018 7:19 pm

Yes, because there is no net charge on the molecule, and the each oxygen/hydrogen atom will have the same oxidation number in each case, giving each atom an oxidation number of zero.

Kailey Brodeur 1J
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Joined: Thu Jul 27, 2017 3:00 am

Re: Oxidation state

Postby Kailey Brodeur 1J » Sun Feb 25, 2018 7:42 pm

O2 and H2 are neutral molecules; they are not ions. Only ions or ionic compounds have an oxidation number. For instance, the hydrogen ion has a +1 oxidation number and an oxygen ion has a -2 oxidation number.

Jaewoo Jo 2L
Posts: 31
Joined: Fri Sep 29, 2017 7:06 am

Re: Oxidation state

Postby Jaewoo Jo 2L » Sun Feb 25, 2018 8:12 pm

If it's a halogen or H2 (stable elements) and it's are diatomic, it still has an oxidation number of zero.


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