NMR

• Nuclear magnetic resonance (NMR) spectroscopy is used to determine the structure of organic molecules.
• Will molecules with an even number of nucleons be visible on NMR graph

  No - only molecules with an ODD number of nucleons will be visible, this is because they possess spin
• explain why we have different peaks for carbon NMR

  Carbons with different bonds will feel the magnetic field differently
• why do we use TMS as a comparable peak?

  • inert - does not react with anything
  • non-toxic
  • volatile
  • it has same environments so we could use it or both carbon and hydrogen