How many of the following statements are true? • Formal charge can be used to pick the best Lewis structure amongst 2 choices. • For a species having three resonance structures, it is best to think of the species to exist as each of these structures one- third of the time, and switching between those three structures • Resonance structures involve changes to the sigma bonds. 02

How many of the following statements are true? • Formal charge can be used to pick the best Lewis structure amongst 2 choices. • For a species having three resonance structures, it is best to think of the species to exist as each of these structures one- third of the time, and switching between those three structures • Resonance structures involve changes to the sigma bonds. 02

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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O Resou A compound composed of 3.3% H, 19.3% C, and 77.4% O has a molar mass of approximately 60 g/mol. What is the molecular formula of the compound? molecular formula: H,CO, Draw the Lewis structure of the compound where the H atom(s) are bonded to O atom(s). Incorrect the C atom in this compound?
= Deciding whether a Lewis structure satisfies the octet rule Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure a-o :O: : 0: [×—8]¯ ! O Yes. O No, it has the wrong number of valence electrons. The correct number is: Is the proposed Lewis structure reasonable? No, it has the right number of valence electrons but doesn't satisfy the O octet rule. The symbols of the problem atoms are:* 0 O O O O Yes. No, it has the wrong number of valence electrons. The correct number is: O No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* U Yes. No, it has the wrong number of valence electrons. The correct number is: O 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 OD — 3/5 I
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Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure -C=C:] H-C : 0: 0=0=0 [HO] : O OO 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:* П 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 "O,0".
The formal charge is the "charge" an element would have in a molecule or ion if all of the bonding electrons were shared equally between atoms. We can draw three inequivalent Lewis structures for the thiocyanate ion , SCN" . The concepts of formal charge and electronegativity can help us choose the structure that is the most significant representation. 1. Assign formal charges to the elements in each of the structures below. :S- C=N: S =C=N :S= C-N: А В Formal Charge C N 2. The structure that contributes most significantly to the overall electronic structure of SCN¯ is
Draw Lewis structure(s) for the acetate ion (CH2CO0). If there are equivalent resonance structures, draw all of them. • Draw one structure per sketcher box, and separate added sketcher boxes with the Do not include overall ion charges or formal charges in your drawing. • Do not draw double bonds to oxygen unless they are needed in order for the central atom to obey the octet rule. symbol. CH3COO":
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An incomplete Lewis structure is shown below. The structure only shows the atoms and how they are connected. The molecule has a net charge of +1. Complete the Lewis structure giving all atoms full octets. If there is more than one way to do this, draw resonance structures showing all possibilities. If not, just draw one Lewis structure. Be sure to write in any non-zero formal charges.
Write Lewis structures for the following molecules or ions, which have central atoms that do not obey the octet rule: