Homework Problem 3.123: Radicals

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Therese Abely 3A
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Joined: Fri Sep 25, 2015 3:00 am

Homework Problem 3.123: Radicals

Postby Therese Abely 3A » Thu Oct 15, 2015 11:40 am

In this question, it asks you to draw the Lewis structure for HOCO, which is an intermediate step in the oxidation of methane to carbon dioxide. You also have to determine if it is a radical or not, which it turns out that there is a lone electron on the C of the Lewis structure. I was just wondering, how are you supposed to know that? Why would you not just complete the octet of the C?

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Joined: Fri Sep 25, 2015 3:00 am

Re: Homework Problem 3.123: Radicals

Postby jennifer_zhou2C » Sat Oct 17, 2015 10:16 pm

Actually, the carbon should bond twice with one of the oxygens, leaving another oxygen with 7 valence electrons. This makes it a radical because there is one uncompleted octet. Because the structure is not ionized, there is no way for the oxygen to gain another electron as it does not apply for the expanded valence shells.

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