a.) Calculate the frequency of the J = 7 ← 6 transition in the pure rotational spectrum of 12C16O. Assume the equilibrium bond length is 109.36pm.Frequency is ______ HzWhat is the corresponding wavenumber? _________ cm-1 b.) Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is(a) the moment of inertia of the molecule? Ans = 3.132E-47 kg-m2(b) the bond length? ________ Angstroms(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)
Electronic Transitions and Spectroscopy
The term “electronic” connotes electron, and the term “transition” implies transformation. In a molecule, the electrons move from a lower to a higher energy state due to excitation. The two energy states, the ground state and the excited state are the lowest and the highest energy states, respectively. An energy change is observed with this transition, which depicts the various data related to the molecule.
Photoelectron Spectroscopy
Photoelectron spectroscopy (PES) is a part of experimental chemistry. It is a technique used in laboratories that involves projecting intense beams of radiation on a sample element. In response, the element ejects electrons for which the relative energies are measured.
a.) Calculate the frequency of the J = 7 ← 6 transition in the pure rotational spectrum of 12C16O. Assume the equilibrium bond length is 109.36pm.
Frequency is ______ Hz
What is the corresponding wavenumber? _________ cm-1
b.) Suppose that the wavenumber of the J = 1 ← 0 rotational transition of 1H79Br considered as a rigid rotor was measured to be 17.89 cm-1, what is
(a) the moment of inertia of the molecule? Ans = 3.132E-47 kg-m2
(b) the bond length? ________ Angstroms
(Given the isotopic masses:(m(79Br) = 78.9183 amu, m(81Br) = 80.9163 amu)
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