Molecular Representations Quiz Review

Which of the indicated atoms has only one lone pair? Just look at the atom that is indicated by a red letter.

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Which of the indicated atoms have no lone pairs? Select all that apply.

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Which of the indicated atoms have two lone pairs? Select all that apply.

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Which of the indicated atoms have three lone pairs

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What is the hybridization of the carbon atoms 1-5 in the following structure?

• a.C1=sp3, C2=sp3, C3=sp3, C4=sp3, C5=sp3

• a.C1=sp3, C2=sp2, C3=sp2, C4=sp3, C5=sp3

• a.C1=sp2, C2=sp2, C3=sp2, C4=sp2, C5=sp3

• a.C1=sp3, C2=sp2, C3=sp2, C4=sp2, C5=sp3

• a.C1=sp2, C2=sp2, C3=sp2, C4=sp2, C5=sp2

Use numbers to represent curved arrows that transform the resonance structure shown into the ion’s other important resonance structure. List the number of the arrow’s origin followed by the number of the arrow’s destination.

• 9 to 8, 6 to 3

• 9 to 8

• 9 to 8, 6 to 4

• 6 to 4

• 6 to 5, 4 to 2

Use numbers to represent curved arrows that transform the resonance structure shown into the ion’s other important resonance structure. List the number of the arrow’s origin followed by the number of the arrow’s destination.

• 3 to 2

• 9 to 4

• 3 to 4, 6 to 7

• 6 to 7, 3 to 5

• 6 to 8

Use numbers to represent curved arrows that transform the resonance structure shown into the ion’s other important resonance structure. List the number of the arrow’s origin followed by the number of the arrow’s destination.

• 9 to 8, 6 to 3

• 8 to 9

• 3 to 6

• 3 to 6, 8 to 9

• 3 to 2, 8 to 9

Determine which of the two main rules of drawing curved arrows the following actions violate, if any rules are broken. Remember that curved arrows should not break single bonds or violate the octet rule.

• 1 violates the octet rule, 2 no violation, 3 breaks a single bond

• 1 violates the octet rule, 2 violates the octet rule, 3 violates the octet rule

• 1 no violation, 2 no violation, 3 breaks a single bond

• 1 violates the octet rule, 2 no violation, 3 violates the octet rule

• All are acceptable

Which of the following represent correct curved arrow notation for drawing resonance structures? (Check all that apply.)

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