hw_ch37.pdf

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

• Homework Help
• 1

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

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?
This is the end of the preview. Sign up to access the rest of the document.
• Fall '08
• Reynolds,S
• Atom, Chemical polarity, dipole moment

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern