NMR Spectroscopy
What is shielding in NMR?

When the magnetic moment of an atom blocks the full induced magnetic field from surrounding nuclei
Blocking parts of a molecule from Rf radiation
Using a curved piece of metal to block an opponents attack
Putting metal around an Rf source

ANSWER DOWNLOAD EXAMIANS APP

NMR Spectroscopy
Why is it important to use a deuterated solvent?

Expensive solvents work best with NMR
NMR uses least of this solvent
They dissolve polymer the fastest
So the spectrometer can lock onto the sample to prevent the spectrum from drifting during aquisition

ANSWER DOWNLOAD EXAMIANS APP

NMR Spectroscopy
All hydrogen atoms

have the same resonance frequency
resonate at about the same frequency as carbon
are attached to carbon
resonate at different frequencies depending on their environment.

ANSWER DOWNLOAD EXAMIANS APP