Oxidation states

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Gwynneth Orlino 1B
Posts: 26
Joined: Wed Nov 21, 2018 12:18 am

Oxidation states

Postby Gwynneth Orlino 1B » Fri Jul 26, 2019 1:41 pm

How do you find the oxidation state of an element?

Yilun Ding
Posts: 31
Joined: Tue Jun 25, 2019 12:15 am

Re: Oxidation states

Postby Yilun Ding » Fri Jul 26, 2019 3:05 pm

By reference to the periodic table, the Group 1 metals are more likely to lose an electron to become octet, then it has +1 oxidation state. However, because of relatively high ionization energy, the Group 7 non-metals will not lose electrons, instead, they usually gain an electron to become octet. Therefore, they usually have -1 oxidation state. These trends, however, will not be applied to transition metals since they usually have more than one oxidation states.

205458163
Posts: 33
Joined: Wed Jun 26, 2019 12:15 am

Re: Oxidation states

Postby 205458163 » Sat Jul 27, 2019 2:43 pm

You can calculate the oxidation state of a certain atom by using the sum of all positive and negative equal to 0.

Karina Vasquez 1D
Posts: 35
Joined: Fri Mar 01, 2019 12:15 am

Re: Oxidation states

Postby Karina Vasquez 1D » Sat Jul 27, 2019 8:09 pm

205458163 wrote:You can calculate the oxidation state of a certain atom by using the sum of all positive and negative equal to 0.

What do you mean by using the "sum of all positive and negative equal to 0"?

Chris Charton 1F
Posts: 19
Joined: Mon Jun 17, 2019 7:23 am

Re: Oxidation states

Postby Chris Charton 1F » Mon Jul 29, 2019 12:38 am

I think they might be referring to finding the oxidation state of a metal in a coordination compound.

hannabarlow1A
Posts: 37
Joined: Mon Jun 17, 2019 7:23 am

Re: Oxidation states

Postby hannabarlow1A » Mon Jul 29, 2019 8:59 am

For coordination compounds, based on the charge of the overall compound, you can figure out the oxidation state of the central ion based on the known charges of the ligands and ions. For example, [Pt (NH3)5 Cl] Br3 has no net charge, so you know that the sum of all the charges must be 0. NH3 has no charge, Cl has a -1 charge, and Bromine has a -3 charge (-1 charge for each bromine atom). Therefore, the oxidation state of Platinum must be 4 because: 4 -1-3=0


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