{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Problem Set 7

# Problem Set 7 - Name Section Rec TA Side 1 of 3 Ch 1a...

This preview shows pages 1–2. Sign up to view the full content.

Name Ch 1a, Problem Set Seven Section Side 1 of 3 Due Friday, Nov. 12, 2004 Rec TA at 4 PM in the SAC Problems 3 and 6 are designated as no collaboration problems. 1. (50 points) Consider the neutral, anion, and cation species for each of the following homonuclear diatomics. Using the general MO diagram given for homonuclear diatomics, list the orbital configuration (eg: 1s σ b 2 1s σ *2 2p x,y π b 4 2p σ b 2 …) and bond order (eg: 0.5, 1.5, 2, etc.) for each of the following molecules and ions. Also label which species are paramagnetic and which are diamagnetic. a. Hydrogen (i.e. H 2 + , H 2 , H 2 " ) b. Helium (i.e. He 2 + , He 2 , He 2 " ) c. Lithium (…) d. Berillium (…) e. Carbon (…) f. Nitrogen (…) g. Oxygen (…) h. Fluorine (…) 2. (40 points) Hydrazoic acid, HN 3 , is a fun compound to work with: not only does it have an irritating odor that is dangerous at concentrations of less than 1 ppm, but in solution it is potentially explosive. Assume the connectivity of atoms in the compounds is the following ( a , b , and c are arbitrary indices to label the nitrogens): N a " N b " N c " H a. Draw the three most reasonable resonance structures of HN 3 . In each case, give the formal charges on the nitrogen atoms in each resonance form, and estimate the N a " N b " N c and N b " N c " H bond angles in each resonance form. b. The measured N b " N c " H bond angle is 112°. Use VSEPR theory to select the resonance structure(s) that best describe the true structure of this molecule and predict the bond angle. Explain your answer.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ 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