A nuclear magnetic resonance, or NMR, spectrometer is an instrument that can be used to characterize molecules based upon:. a. vibrations of portions of the molecule brought about by the absorption of infrared radiation.
b. the behavior of the nuclei of certain atoms in a magnetic field.
c. the excitation of inner shell electrons.
d. the nuclear radiation emitted by certain molecules.

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons