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- Calculate the energy(kJ)whenphotons areejected from 3molesofhydrogen atomsupon an electron transition from n = 4to n = 2. ∆?=−??(1??2−1??Explain 1H NMR: Spin-Spin Splitting ?Question 2: Consider the d4 electron configuration of a free ion: a) Calculate the spin multiplicity b) Calculate the maximum value of ML, and deduce the value of L. c) Based on your calculation of S and L what is the term symbol of the d4 free ion?
- Which of the following statements regarding IR spectroscopy is incorrect?choose the correct answer Concerning nuclear spin (I), which of the ?following is true a. Spin is due to rotation of the nucleus about its axis. b. Protons have spin, but neutrons do not .c. Spin can only have integer or half- integer values. d. Another name for spin is "precession". Prolate shape of nucleus means it has an electric quadrupole moment Q a. Q is +ve b. Q =0 c. Q is -ve d. both +ve and -evAccording 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
- Question 7 (1 point) No 2 electrons can occupy the same suborbital with the same spin Question 7 options: True False?Which of the following shows inert pair effect Ba O Cb O Si.c O Pb d أحل اختباريNMR theory: Spin-lattice (T,) relaxation refers to the amount of time required for the spins to return to their thermal equilibrium distribution along the xy plane. * O True False
- 5. Calculate wavenumber for C=C and C=C by Hook's law. stronger bond higher frequency f force constant v =k/m Hooke's law M=mass k = constant smaller mass -higher frequency The force constant (f) of C=C 10 x 105 dyne/cm and C=C, 15 x 105 dyne/cm The mass (m) is the mass of atoms (or weights). The smaller the value of m, the higher the V of vibration. CH3O. H. HO capsaicin (spicy component of hot peppers)A scientist investigates the possibility of neutron spin resonance, and has available a commercial NMR spectrometer operating at 300 MHz for 1H nuclei. What is the NMR frequency of the neutron in this spectrometer? What is the relative population difference at room temperature? Which is the lower energy spin state of the neutron?9) The vibrational frequency of gaseous HCl occurs at 2885 cm¹ in the IR spectrum. What is the energy E, of this radiation in joules? a) 5.73 x 10-20 J b) 8.24 x 10-19 J c) 6.48 x 10-21 J d) 1.80 x 10-19 J