Homework 5-problems (1)

Homework 5-problems (1) - ruisi(hhr239 – Homework 5 –...

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Unformatted text preview: ruisi (hhr239) – Homework 5 – sutcliffe – (50985) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. Questions 1 through 13 deal with VB the- ory, the rest with MO theory. 001 10.0 points Which of the following combinations of hy- bridization and molecular geometry is possi- ble? 1. sp 2 : linear 2. sp 3 : trigonal pyramidal 3. sp 3 d : tetrahedral 4. sp 3 : octahedral 5. sp 3 : trigonal planar 6. sp 3 d : octahedral 7. sp 3 : trapezoidal 8. sp 2 : tetrahedral 002 10.0 points The sp 3 hybridization has what percent s character and what percent p character? 1. 25%; 75% 2. 75%; 25% 3. 33%; 67% 4. 67%; 33% 5. 50%; 50% 003 10.0 points A molecule AB 3 has eight shared electrons and follows the normal octet rule. The central atom is “A”. The atoms surrounding A are represented by B. Pick the true statement. 1. It has linear molecular shape. 2. It must be an anion. 3. It has one lone pair of electrons on A. 4. It is a polar molecule. 5. It exhibits resonance. 6. It is sp 3 hybridized. 7. It has two single bonds and two double bonds. 004 10.0 points Carbon has a valence of four in nearly all of its compounds and can form chains and rings of C atoms. Consider the cyclopropene structure. C C C H H H H ← c ← a ← b What hybridizations would you expect for the carbon atoms identified by a, b, and c, respectively?...
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Homework 5-problems (1) - ruisi(hhr239 – Homework 5 –...

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