Radicals in structures  [ENDORSED]

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VahagnAldzhyan
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Radicals in structures

Postby VahagnAldzhyan » Fri Nov 10, 2017 1:14 am

Do does the unpaired electron in a radical go to the least electronegative atom or to the one with the lowest formal charge?

miznaakbar
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Re: Radicals in structures

Postby miznaakbar » Fri Nov 10, 2017 11:03 am

From what I understand, the radical generally goes to the least electronegative atom (for example, in ch 3 question 123 the lewis structure of HOCO places the radical on the Carbon rather than one of the Oxygens).

Tatiana Hage 2E
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Re: Radicals in structures

Postby Tatiana Hage 2E » Fri Nov 10, 2017 11:11 am

It also helps to check the formal charges of each atom. For example, with HOCO, placing the unpaired electron on the carbon gives it a formal charge of 0.

Chem_Mod
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Re: Radicals in structures  [ENDORSED]

Postby Chem_Mod » Fri Nov 10, 2017 2:29 pm

Informative posts, well done. Thumbs Up.

All the midterm Lewis structures came from the homework questions.

Give an octet to the atoms with higher electronegativity and less than an octet (radical) on the atom with lower electronegativity.
See homework questions illustrating this.

In class I kept on announcing: do the homework problems


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