# Is #C_2^-# paramagnetic or diamagnetic?

##### 1 Answer

May 27, 2016

#### Answer:

We have 13 electrons -- six from each carbon atom plus one more for the negative charge. With an odd number at least one is unpaired. Thus

#### Explanation:

As you likely know, paramagnetism comes from unpaired electrons aligning their spin with a magnetic field. For typical molecular species this is the prediminant magnetic interaction -- if we can find an unpaired electron.