hw_ch37.pdf - Fall 2013 PY 203 Modern Physics Problems on...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Fall 2013 PY 203: Modern Physics Problems on Molecular Bonding and Spectra 1. The dissociation energy of Cl 2 is 2.48 eV. Consider the formation of an NaCl molecule by the reaction Na + 1 2 Cl 2 NaCl . Is this reaction endothermic (requiring energy) or exothermic (releasing energy)? How much energy per molecule is required or given off? 2. The equilibrium separation of the Rb + and Cl ions in RbCl is about 0.267 nm. (a) Calculate the potential energy of attraction of the ions, assuming them to be point charges. (b) The ionization energy of rubidium is 4.18 eV, and the electron affinity of Cl is 3.62 eV. Find the dissociation energy, neglecting the energy of repulsion. (c) The measured dissociation energy is 4.37 eV. What is the energy due to repulsion of the ions? 3. (Tipler & Mosca Problem 37-16) The equilibrium separation of the atoms in the HF molecule is 0.0917 nm, and its measured electric dipole moment is 6 . 40 × 10 30 C · m. What percentage of the bonding is ionic?
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern