End of Topic Quiz - NMR

Chemistry: IB Diploma Higher Level, topic 7.3.5

Test yourself on End of Topic Quiz - NMR

In order for a nucleus to have an overall spin, what must be true of the nucleon number?
When placed in a magnetic field, nuclei can spin with the magnetic field or against it.

What can be said for nuclei spinning against the magnetic field?
What type of electromagnetic radiation is used to excite nuclei in NMR?
"¹H nuclei will all apear at the same point along the x-axis of an NMR spectrum"

Is this statement true or false?
The ratio of the area under 2 signals shows what?