2C.1

[Hasmik Dis 2F]

Which of the following species are radicals? (a) NO 2; (b) CH3 ;
(c) OH; (d) CH2O.

Basically, I did the lewis structures and noticed that (c) and (d) are radicals since CH3 and OH have 7 valence electrons. However, when I checked the textbook answers, it said only a and b are radicals. I thought it might've been a typo, but when I checked the solutions manual errors, this wasn't on there. Does anyone know what's up with this question? Thanks!

[BrittneyMyint1D]

Looking through the other posts regarding this question, I believe there is a mistake in the online answer key. The radicals should be CH3 and OH. Hope this helps!