2) The potential energy between a pair of neutral atoms or molecules is very well approximated by the Lennard-Jones Potential, given by the expression, 12 V(r) = = 4ɛ where & and o are constants, and r is the distance between the molecules. The potential energy is plotted in the figure below. The vertical axis is in units of ɛ, while the horizontal axis is in units of o. Moleular Bond Energy 1.25 15 1.75 2 2.25 2,5 2.75 3.25 -2 -3 Distance

2) The potential energy between a pair of neutral atoms or molecules is very well approximated by the Lennard-Jones Potential, given by the expression, 12 V(r) = = 4ɛ where & and o are constants, and r is the distance between the molecules. The potential energy is plotted in the figure below. The vertical axis is in units of ɛ, while the horizontal axis is in units of o. Moleular Bond Energy 1.25 15 1.75 2 2.25 2,5 2.75 3.25 -2 -3 Distance

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter11: Molecular Structure

Section: Chapter Questions

Problem 8Q

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Similar questions

Why is tbe equilibrium separation distance between K+ and Cl- different for a diatomic molecule than for solid KCl?
The characteristic energy for KCl is 1.4105eV . (a) Determine for the KC1 molecule, (b) Find the separation distance between the K arid Cl atoms.
Compare the effective force constant for the CO molecule deduced here with that of an ordinary laboratory spring that stretches 0.5 m when a 1.0 kg mass is suspended from it.
For the following cases, what type of bonding expected? (a) KCl molecule; (b) N2 molecule.
The Madelung constant for the NaCl structure may be found by summing an infinite alternating series of terms giving the electrostatic potential energy between an Na+ ion and its 6 nearest Cl neighbors, its 12 next-nearest N+ neighbors, and so on (see Fig. 12.1a). (a) From this expression, show that the first three terms of the infinite series for the Madelung constant for the NaCl structure yield = 2.13. (b) Does this infinite series converge rapidly? Calculate the fourth term as a check.
The figure above shows the absorption spectrum of the molecule HBr. Following the basic procedures of Section 9.6, find:(a) the energy of the “missing” transition;(b) the effective force constant k;(c) the rotational spacing 2B. Estimate the value of the rotational spacing expected for HBr and compare with the value deduced from the spectrum. Why are there only single lines and not double lines as in the case of HCl?
The fundamental frequency is 2230 cm−1 for the molecule 1H127I. If the H atom is replacedwith D (an isotope of H atom with mass 2, i.e. 2H), calculate the fundamental frequency assumingthat the force constant stays the same. Repeat the calculation if the diatomic molecule underconsideration is 1H37Cl (fundamental frequency = 2886 cm−1). Explain your observations.
Shape at she center of, it of afall or mole es Te n heals of a morn is 1 u and that of the Cl atom is 35 u. (b) The H20 molecule is also shown below. The mass of the O atom is 16 u. The H and O atoms are separated by 1 × 10-10 m and the bond angle is 105". Some part A is wrong can you please show all work
The equilibrium separation between the two ions in the KCl molecule is 0.267 nm. (a) Assuming that the K+ and Cl- ions are point particles, compute the electric dipole moment of the molecule. (b) Compute the ratio of your result in (a) to the measured electric dipole moment of 5.41 x 10-29 C*m. This ratio is known as the fractional ionic character of the molecular bond.
A 1H 19F molecule, with a bond length of 91.68 pm, absorbed on the surface and rotates in twodimensions. A) What is the smallest quantum energy that can be absorbed by this molecule in afirst rotational excitation?B) Calculate the zero-point energy for this molecule
When are the rotational degrees of freedom of a diatomic molecule expected to contribute R to the molar constant volume heat capacity? When will a vibrational degree of freedom contribute R to the molar heat capacity?
Find the number of vibrational degrees of freedom of a CO2 molecule,if the average kinetic energy of it is 4 kT.