2.11 Assessing the Relative Importance of Resonance Structures Which of the resonance structures below is most significant? A C O structure C O structure A structure B
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- The percent ionic character of a bond can be approximated by the formula 16+3.52 , where is the magnitude of the difference in the electronegativities of the atoms (see Fig. 3.18). Calculate the percent ionic character of HF, HCl, HBr, HI, and CsF, and compare the results with those in Table 3.7.Decide wnether these proposed Lewis structures are reasonable. proposed Lewis structure : 0: H = Br : 0: :0-C- O: HIC C-H Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". XWhich of the following pairs are NOT resonance structures? + H₂C-0-N=0: and H₂C-O=N-0: :0=c=0: =Ö: and :Ö= H₂C-0-N=0: and H₂C- Each of these pairs represents resonance structures. O None of these pairs represents resonance structures.
- a04389c#/a- ew) 2.11 Assessing the Relative Importance of Resonance Structures Which of the resonance structures below is more significant? A O structure A O structure B O both structures are equally significant Save for LaterDecide whether the Lewis structure proposed for each molecule is reasonable or not. molecule proposed Lewis structure 9 CIF 3 BH3 :0 0-0: :F- FIN: :F: :ö: || : F: -F: H B H 1 H Is this a reasonable structure? If not, why not? OYes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: OO Yes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: OYes, it's a reasonable structure. O No, the total number of valence electrons is wrong. The correct number is: O No, some atoms have the wrong number of electrons around them. The symbols of the problem atoms are: 0 * If two or more atoms have the wrong number of valence electrons around them, just enter the chemical symbol for the atom as…Which one of the following pairs of Lewis structures represents resonance? 1. :0 C=c II. H H-C-c c=0: Hi C=0: H :O=C-ö: III. :0=C=0:
- Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure :Z: : H H-Ö N — -0. : 0: :Z: ] — :Z: N=N C1: : Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0".Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure :Z: : 0: : 0: :0 N=N 0=C=0 : 0: ] - C. — : 0: 0: Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: * * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". ŚFor the species shown below, identify the structure underneath that is not a valid resonance structure. +) (a) (b) (c) (d) (e) a O e d.
- Clear o= s = 0. || Below is one of the Lewis structures of SO3, which has two other resonance structures that do not violate the octet rule. :ö-s=ö :: Complete one of the other resonance structures by dragging bonds and electron lone pairs to their appropriate positions. Then click Check.Assign formal charges to all atoms in the following Lewis diagrams. (a) SO?- :ö: (b) S2O?- :ö: :0-s-ö: -s-ö: :0: :S: (c) SbF3 (d) SCN- :F-$b-F: [š-c=N:] :F:Assign formal charges to each atom in the two resonance forms of COCI,. :O: :0: C. C. :C Cl: :C Cl Answer Bank -4 -3 -1 +1 +2 +3 +4
