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What is the resonance frequency of an 11B nucleus in a 2.35 T magnetic field (g= 8.584 x 107 rad T-1 s-1)?
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- Why is 133C-133C spin-spin splitting not observed in ordinary organic compounds?What is the resonance frequency of a proton in a magnetic field of 14.1 T?We calculated that the resonance frequency of an 1H in the presence of an 11.74 tesla magnet was 500MHz, and we later saw that a 13C nucleus resonantes at approximately 125 MHz in this same magnetic field. What is the resonance frequency of a 19F nucleus in the presence of an 11.74 tesla magnet?
- Using the Boltzmann’s law, show that, for a spin-1/2 nucleus at thermal equilibrium at temperature T in a magnetic field Bo, the probabilities of finding it in the a and ß states are: yħBo e kT 1 yhBo 1+е kт Pa ; Pg : yhBo 1+е kTClassify the 19F nuclei in SF5− (which is square-pyramidal) into chemically or magnetically equivalent groups. Give your reasoning.According to the shell model, the spin-parity of the ground state of 0-18 (Z=8, A=15) nucleus is: O Nuclear spin: 1, parity: + Nuclear spin: 0, parity: + Nuclear spin: 2 parity: + Nuclear spin: 2 parity: - Ο Ο Ο Ο 13
- How can i calculate value of nuclear spin(I)? Why 11B’s I is 3/2 ?A proton jumps between two sites with δ = 2.7 and δ = 4.8. At what rate of interconversion will the two signals collapse to a single line in a spectrometer operating at 550 MHz?What is responsible for the small peak at m/z = 17 in the mass spectrum of CH4?
- Find the ratio of the populations of the two spin states of protons in a magnetic field of 4.6973 T at 25°C. gp = 5.5857 UN = 5.0508 x 10-27 J/TCalculate the ratio of nuclei in the higher spin state to those in the lower spin state, Nh/Nl, for 1H at 25°C in an applied field strength of 7.05 T.Calculate the frequency separation (in megahertz) of the nuclear spin levels of a 13C nucleus in a magnetic field of 15.4 T given that its magnetogyric ratio is 6.73 × 10−7 T−1 s−1.
