Question

I am struggling to understand NMR and the process. can someone help me understand these questions?

QUESTION 1 For NMR, the chemist is relying on the least abundant isotope of hydrogen while in the case of SC NMR the chemistrelies on the most abundant isotope! True False QUESTION 2 When a radio frequency is applied, the nucleus tips to a higher energy state against the magnetic fieldili True False QUESTION 3 The radio waves are pinged repeatedly and the instrument collects the decay of the signal falling back to the lower energy state, this is called free induction decay, or FID The raw signalis then converted to an NMR spectrum using the mathematical function Fourier Transformation (FT). True False QUESTION 4 The second principle of NMR is that equivalent hydrogens result in only one signal! True False

Answer 1

"Question 1 In both 'H-NMR & 1 C-NMR chemist selying on the most abunda- -nt isotopes. given statement is false. Question 2 During NMR analysis, when external magnetic field is applied which fords the nuclear spin to allish with & against the the magnetic field. given stalement is false Question 3 The radio waves are pinged repeatedly and the entiment collects the decay of the signal falling back to lower energy state This is called F2D, then converted to an NMR spectrum using mathematical function Courses transitomation (FT). given statement is true. Question 4 The second principle of NNR is that equiralent hydrogens result in only one signal. . Equivalent hydrogens gives only one signal. i stacement is true. 1