ch304 hw4 - dh2964 Homework 4 Walker(53970 This print-out...

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dh2964 – Homework 4 – Walker – (53970) 1 This print-out should have 37 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 1.0 points How many lone electron pairs are Found on the central atom oF SCl 4 ? 1. 4 2. 3 3. 2 4. 1 5. 5 002 1.0 points (Note From your instructor: MgCl2 is not the answer to this question.) Which oF the Following compounds I) CH 4 II) PCl 5 III) Xe± 2 IV) MgCl 2 are exceptions to the octet rule? 1. IV only 2. III and IV 3. II, III and IV 4. II and III 5. III only 003 1.0 points A hydrogen atom does not bond to more than one element at a time because 1. Hydrogen preFers to exist as a homonu- clear diatomic molecule. 2. It is too small. 3. With only two electrons needed to fll its valence shell it can’t. 4. Hydrogen preFers to exist as a Free radi- cal. 5. It doesn’t Form covalent bonds. 004 1.0 points Which oF the Following is the correct Lewis Formula For boron tri²uoride (B± 3 )? 1. b b b b b b b b b b b b b b b b b b b b b b b b ± B ± ± 2. b b b b b b b b b b b b b b b b b b b b b b b b b b ± B ± ± 3. b b b b b b b b b b b b b b b b b b b b ± B ± ± 4. b b b b b b b b b b b b b b b b b b ± B ± ± 5. ± b b b b b b b b B b b b b ± b b b b b b ± b b b b b b 6. ± b b B b b b b ± b b b b b b ± 7. b b b b b b b b b b ± B ± ± 8. b b b b b b b b b b b b ± B ± ± 9. b b b b b b b b b b b b b b ± B ± ±
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dh2964 – Homework 4 – Walker – (53970) 2 10. F B F F b b b b b b b b b b b b b b b b b b 005 1.0 points The energy of a photon of light 1. None of the other choices is correct. 2. is highest for red light. 3. increases with increasing frequency. 4. increases with increasing wavelengths. 006 1.0 points What is the wavelength of radiation of fre- quency 4 . 80 × 10 13 s - 1 ? 1. 1 . 44 × 10 22 m 2. 3 . 48 × 10 - 8 m 3. 7 . 10 × 10 - 7 m 4. 6 . 25 × 10 - 6 m 5. 1 . 60 × 10 1 m 007 1.0 points (Note from your instructor: For this prob- lem, select the answer choice closest to your calculated answer.) What is the energy of a photon of light with a frequency of 6 . 0 × 10 14 s - 1 ? 1.
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This homework help was uploaded on 03/19/2008 for the course CH 304k taught by Professor Walker during the Spring '08 term at University of Texas.

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ch304 hw4 - dh2964 Homework 4 Walker(53970 This print-out...

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