Q1. a) Use vibrational analysis to identify which vibrations of the BrF5 molecule are IR and which are Raman active.

Q: What are the symmetry (irreducible representation) of the bending and asymmetric stretching…

A: The solution of the question is given below:

Q: Find the term symbols for the 2p1 3d1 excited state.

A: A term symbol has the form, 2S+1LJ where  S is the total spin (2S+1 is the multiplicity) L the…

Q: The wavenumber of the fundamental vibrational transition of 35Cl2 is 564.9 cm−1. Calculate the force…

A: Given, vibrational transition of 35Cl2 is 564.9 cm−1.

Q: 3. State which of the following molecules have (a) rotational absorption spectra, i.e. are…

A: The question is based on the concept of physical Spectroscopy. we have to identify which of the…

Q: he vibrationa l period of the C-H bond in tribromomethane, CHBr3, is 91.2 ps. Treating the molecule…

A: The reduced mass for the C-H bond is calculated as shown below. The reduced mass for the C-H bond is…

Q: Estimate the absorption frequency of butadiene if the sum of the bond lengths is 0.424nm

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Q: What is the most highly populated rotational level of Br2 at (i) 25 °C, (ii) 100 °C? Take ᷉  B =…

A: i)

Q: In what two ways does the Morse potential provide a more accurate description of molecular…

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Q: Consider the vibrational mode that corresponds to the boat-like bending of a benzene ring. Is it (i)…

A: Rule of mutual exclusion : According to this rule , for centrocymmetric ( point of inversion present…

Q: What information can be obtained from IR and Raman spectra and how this can be applied in COSMETIC…

A: IR active molecules are Raman inactive and vice-versa.

Q: Which of the fol lowing molecules can have (a) a pure rotational spectrum and (b) a rotational Raman…

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Q: What is the order of decreasing vibrational frequency for C — Cl, C — Br, C — C, C — O and C — H ?

A: Vibrational frequency depends upon various factor such as electronegativity, bond strength, mass of…

Q: The no. Of IR active vibrational normal modes of CO2 are

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Q: The moments of inertia for CH3CH3 is Ia=1.1 x 10-46 Kg.m2 and Ib=4.2 x 10-46 kg.m2 First Classify…

A: The rotational constants A and B are related to the moment of inertia as follows: B(or A)=h8π2Ic…

Q: Q1 : A With reference to the 3f 1d 3p 1g and Is terms of a d2 configuration ,explain how you can use…

A: Term symbols are used in spectroscopy to describe the electron configuration in terms of the total…

Q: Which of the normal modes of (i) H2O, (ii) H2CO are infrared active?

A: Infrared active modes of (i) H2O, (ii) H2CO are given in step 2

Q: Consider the rotational spectrum of a linear molecule at 298 K with a moment of inertia of…

A: Introduction :  We have to calculate the frequency and most populated state .

Q: a. Given that the bond length of 'H1°F is 0.91 angstrom (1 angstrom = 10-10 m), calculate the %3D…

A: Welcome to bartleby!  As per company guidelines we can answer three parts .I have answered first…

Q: If B = 1.9982 cm1 for 14N2, what is the approximate rotational constant for 15N2?

A: Given- B for 14N2=1.9982 cm-1  B for 15N2 =?

Q: The wavenumber of the fundamental vibrational transition of Cl 2 is 565 em·'. Calculate the force…

A: Hooke's law relates the wavenumber of the vibrational transition with the force constant and reduced…

Q: Determine the IR active and Raman active vibrational modes for PCl3F2 and PCl2F3

A: PCl3F2, PCl2F3 are derived from the vapor-state infrared spectra and low-temperature liquid-state…

Q: What states of (i) benzene, (ii) naphthalene may be reached by electric dipole transitions from…

A: Refer to the character table for C3v Deducing a selection rule Is px→ py an allowed transition in a…

Q: Why is IR spectroscopy an ineffective method for vibrational studies of homo-nuclear diatomic…

A: IR Spectroscopy detects frequencies of infrared light that are absorbed by a molecule.Molecules…

Q: Q14. Rotational absorption of a diatomic molecule AB occurs with V₁-200 cm³ and the spacing between…

A: We know that in rotational spectra of di atomic molecule like AB lines are equally spaced by 2B. B =…

Q: occupying the first excited state (J = 1) to the probability of occupying the ground state (J=0) For…

A:

Q: How many normal modes of vibration are there for the following molecules: (i) C6H6, (ii) C6H5CH3,…

A:

Q: What is the most highly populated rotational level of Cl2 at (i) 25 °C, (ii) 100 °C? Take ᷉  B =…

A: The most populated rotational energy level is given by, Jmax = (kT/2B)1/2 - 1/2 Note: 1 cm-1 = 12…

Q: (4) For a rotational-vibrational spectrum of H"Br (B = 8.46 cm) taken at 520 K, determine the…

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Q: How many vibrational modes are there for the molecule NC–(C≡C–C≡C–)10CN detected in an interstellar…

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Q: Derive an expression for the force constant of an oscillator that can be modelled by a Morse…

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Q: Is the transition A1g → E2u forbidden for electric dipole transitions in a D6h molecule?

A: The selection rule for electric transition states that the transition between gerade (g) to ungerade…

Q: 1. Consider a model of N localized magnetic ions, given by the spin Hamiltonian N H = DES}, j=1…

A: Solution -

Q: E11C.2(a) Calculate the percentage difference in the fundamental vibrational wavenumbers of "Na Cl…

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Q: Describe the process to find all vibrational modes of the molecule

A: Number of vibrational modes in a polyatomic molecule can be determined by the equation given below

Q: This question pertains to rotational spectroscopy. a. What information is obtained from the…

A: Welcome to bartleby ! Introduction : We have to tell about rotational spectra

Q: What is the energy separation between the n=4 and n=5 states for F2 molecule trapped within in one…

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Q: Calculate the vibrational degrees of freedom of water molecule. (A) 9 (B) 3 (C) 4 (D) 1

A: How many vibrational degree of freedom in water molecule?

Q: The spacing of lines in the microwave spectrum of 27Al1H is 12.604 cm−1; calculate the moment of…

A: The spacing between two lines in a microwave spectrum of a diatomic molecule is equal to 2B, where B…

Q: Which one isn’t not rotationally raman active? HCN, HF, Br2, CCL4

A: The answer is given below

Q: Calculate the percentage difference in the fundamental vibrational wavenumbers of 1H35Cl and 2H37Cl…

A: By Hooke's law: Wavenumber = 12πku k= force constant (Same) u= reduced mass u= m1 m2m1 +m2 m1= mass…

Q: How to obtain a general expression for the R branch in HCl for the lowest vibrational state.

A: Vibartional spectrum is obtained due top the fact that all the molecules are in the state of…

Q: Which of the following molecules may show a pure rotational Raman spectrum: (i) H2, (ii) HCl, (iii)…

A:

Q: The rotational Raman spectrum of 35Cl2 shows a series of Stokes lines separated by 0.9752 cm−1 and a…

A: Mass of a 35Cl atom is 34.9688 u. First calculate the reduced mass (μ) of 35Cl2 . Here m1 is the…

Q: The average spacing between the rotational lines of the P and R branches of 12C21H2 and 12C22H2 is…

A: Introduction: Rotational spectroscopy measures the energies of transition between quantized…

Q: There is no P(0) branch in rotational spectroscopy. True False

A: P branch arises in rotational spectroscopy.

Q: Account physically for the fact that a linear polyatomic molecule composed of N atoms has one more…

A: Solution;- Degree of freedom is the number of variables required to describe the motion of a…

Q: 3/ Please explain the answer in detail

A: