notes_Class_Questions_01_to_03

notes_Class_Questions_01_to_03 - Chem 162 IN-CLASS QUESTION...

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Chem 162 IN-CLASS QUESTION 1 Prof. Norman Consider the compounds NiS, A l (NO 3 ) 3 and CH 4 . In each: (a) is the bonding ionic, covalent, or both? (b) which atom or ion is + and which ?
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Chem 162 IN-CLASS ANSWER 1 Prof. Norman NiS: covalent ( d block + nonmetal) Ni is +, S is . A l (NO 3 ) 3 : both (NO 3 forms ionic compounds but the N O bonds are covalent). A l is +, NO 3 is . CH 4 : covalent (two nonmetals) H δ + , C δ− since χ H = χ P and χ C = χ S .
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Chem 162 IN-CLASS QUESTION 2 Prof. Norman A molecular-orbital energy-level diagram is shown below. For which of the following 3 substances is the diagram correct? C 2 CN N 2 + ___________________________________________________________________________________________________ __ σ * __ __ π * σ ↑↓ ↑↓ π E ↑↓ σ * ↑↓ σ
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Chem 162 IN-CLASS ANSWER 2 Prof. Norman It’s correct for all 3! C
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This note was uploaded on 05/08/2008 for the course CHEM 162 taught by Professor N. during the Spring '08 term at University of Washington.

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notes_Class_Questions_01_to_03 - Chem 162 IN-CLASS QUESTION...

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