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LM 11 Introduction to Valence Bond (VB) Theory-solutions

LM 11 Introduction to Valence Bond (VB) Theory-solutions -...

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nanni (arn437) – LM 11 Introduction to Valence Bond (VB) Theory – vanden bout – (50985) 1 This print-out should have 3 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0points ¡p¿¡span style=”line-height: 115 Your answer must be exact. Correct answer: . Explanation: ¡p¿nbsp;¡/p¿ ¡p class=”MsoNormal” style=”margin: 0in 0in 10pt; line-height: nor- mal; mso-margin-top-alt: auto; mso-margin- bottom-alt: auto;”¿¡span style=”font-family: ’Times New Roman’,’serif’; font-size: 12pt; mso-fareast-font-family: ’Times New Ro- man’;”¿In the VB theory, sigma bonds oc- cur when the atomic orbitals of two shared electrons overlap head-to-head and pi bonds occur when two atomic orbitals overlap side to side.¡/span¿¡/p¿ 002 10.0points ¡p¿¡span style=”font-size: small;”¿¡span style=”font-family: Calibri;”¿Valence bond theory correctly predicts that the orbitals
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Unformatted text preview: in the valence shell oF carbon in methane are:¡/span¿¡/span¿¡/p¿ ¡p¿nbsp;¡/p¿ 1. ¡span style=”line-height: 115 2. ¡span style=”line-height: 115 3. ¡span style=”line-height: 115 4. ¡span style=”line-height: 115 Explanation: ¡p¿¡span style=”Font-Family: ’Times New Roman’,’seriF’; Font-size: 12pt; mso-Fareast-Font-Family: ’Times New Roman’;”¿The car-bon in methane has tetrahedral electronic ge-ometry, thereFore,¡span style=”mso-spacerun: yes;”¿nbsp; ¡/span¿Four pure atomic or-bitals must be¡span style=”mso-spacerun: yes;”¿nbsp; ¡/span¿combined to Form the Four new sp3 hybridized orbitals on the carbon in methane.¡/span¿¡/p¿ 003 10.0 points A set oF hybridized orbitals has the angle 109.5 ◦ associated with it. What is the hy-bridization scheme? 1. sp 3 d 2. Insu±cient inFormation is given. 3. sp 3 correct 4. sp 2 Explanation:...
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