1. What is the smallest quantum energy that can be absorbed by the 1H19F molecule in a rotational excitation?
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1. What is the smallest quantum energy that can be absorbed by the 1H19F molecule in a rotational excitation?
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- 7. A diatomic molecule has 2.6 x 10-5 eV of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 1 quantum state? Find the wavelength for such transition, L = 2 to L = 1.QUESTION 12 The ionization energy of potassium is 4.34 eV and the electron affinity of chlorine is 3.61 eV.The Madelung constant for the KCl structure is 1.748 and the distance between ions of opposite sign is 0.314 nm, given that e is 1.602 X 10-19 C. Compute the cohesive energy of KCI per ion pair. A. -1.284 eV B. -3.643 eV C. -7.285 eV D. -8.015 eVA gas-phase ¹H¹27I molecule, with a bond length of 160.92 pm, rotates in three-dimensional space. a. Calculate the zero point energy associated with this rotation. b. What is the smallest quantum of energy that can be absorbed by this molecule in a rotational excitation?
- Quantum Mechanics, physical chemistry. Screenschot of question attached. For this question, assume the atoms have average atomic masses. Actual molecules will have different isotopes so variation in energy levels will result from different isotopes.QUESTION 10 The lattice energy of CsCl is 633 kJ/mol, the Madelung constant, a, is 1.763, and the Born exponent, n, is 10.7. The ionic radius of Cl- is known to be 1.81 A, e = 1.6 X 10-19 C and NA = 6.02 X 1023 atom/mol. The estimate ionic radius of Cst is: A. 1.69 Å B. 1.81 A C. 3.5 nm D. 3.5 ÅA hypothetical NH molecule makes a rotational-level transition from l=3 to l=1 and gives off a photon of wavelength 1.800 nm in doing so. What is the seperation between the two atoms in this molecule if we model them as point masses? The mass of hydrogen 1.67 * 10^-27 kg, and the mass of nitrogen is 2.33 * 10^-26 kg.
- 1. Cohesive energy of bcc and fcc neon. Using the Lennard-Jones potetial, calculate the ratio of the cohesive energies of neon in the bcc and fcc structures (Ans. 0.958). The lattice sums for the bcc structures are Σ;pi12 = 9.11418; Σ;pij6 = 12.2533Physics sample problems about vectors. Thought I knew how to do them but keep getting wrong answers.1. Enumerate the microstates of p3. Determine the MS and ML values for each microstate. 2. On a table of possible MS and ML values, tally the microstates in no. 1 for a particular combination of MS and ML 3. Based on the table in no. 2, determine the atomic term symbols for the allowed atomic states of p3 resulting from the coupling of orbital and spin angular momentums. 4. Arrange the term symbols in no. 3 according to increasing energy.
- 6. Consider the bond vibration of a homo-atomic diatomic molecule. In the harmonic approximation the vibrational energy levels are given by, E₂ = (v + 1 ) Aes -1 S Where v = 0,1,..., ∞ and w = 6.1 × 10¹4 s−¹. Let us assume this vibrational mode is IR active. A photon of energy E = hc/ is absorbed by the molecule and induces a fundamental vibrational transition. (a) What is the wavelength of the resulting IR absorption peak in nm?Ggg4. Consider a simple cubic system with lattice constant a = 5 Å. Determine the atom density (atoms/cm²) for the (100), (110), and (111) planes.