Unique Spectrum

Does fluorine appear on a carbon NMR spectrum?

The molecule I am looking at is 4-fluorocinnamic acid.
there are 8 unique peaks, but i only count 7 unique carbons in the molecule
is the extra peak fluorine? or am i miscounting the number of unique carbons?

So you are right, there are 7 unique carbons in the molecule. The likely reason you are seeing (what look like) 8 peaks is that the coupling constant between fluorine and carbon is very large - typically around 250 Hz for a carbon directly bonded to fluorine (in this case a doublet splitting as there is only a single fluorine atom). So the signal for this carbon can be confusing - look for two signals of roughly the same height/magnitude separated by ~250 Hz. These two signals correspond to only one carbon.

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