Concept explainers
Interpretation: The set of resonance structures for following cation should be determined.
Concept introduction: Lewis structure is a representation of molecules in which dots are shown to represent unshared electrons and lines are shown to represent bonds. These lines and dots represent distribution of electrons in the molecule.
When one single structure is unable to describe all the properties of a single-molecule, a phenomenon called resonance comes into play. This arises when two or more than two Lewis structures are possible for one molecule. All such structures are called resonating structures and have same placement of atoms in them but these have different locations of bond pairs and lone pairs. The resonating structures are inter-convertible with each other. The resultant of all the resonating or contributing structures is called the resonance hybrid.
Rules to form resonance structure are as follows:
1. Use arrow types 1 and 2 for the resonance structure of anions in the movement of negative charge.
2. Use only arrow type 3 to move a positive charge for the resonance structure of cations.
3. The sigma bond should not be broken. Any atom must not move from its place and the total number of electrons must be the same in all resonance structures.
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Chapter 5 Solutions
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- How many possible resonance structures can you have in total for the nitrite ion.arrow_forwardWhy does the bond dipole point towards the more electronegative atom? Why does it accumulate a partial negative charge?arrow_forwardWhat are four contributing resonance structures for the following compound?arrow_forward
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- What would the resonance for this structure be?arrow_forwardProvide all the possible resonance structure for the following speciesarrow_forwardDraw the Lewis structures for the following four molecules, being sure to show all steps following the methods covered in class. Structures without work shown will be marked incorrect. Also, one of these molecules has resonance structures – for this compound, make sure to include all resonance structures, indicate formal charges for each atom. SO2 OF2 IF3 NH4+arrow_forward
- Draw all the resonance structures for the following molecule. :0:arrow_forwardShow with loops how each atom in hydrogen cyanide completes its valence shell.arrow_forwardThree major contributing resonance structures are possible for the following cation. One is given below. Draw the remaining structures (in any order), including nonbonding electrons and formal charges. Omit curved arrows. н н CH3З Which contributes most to the hybrid? The structure with the positive charge on sulfur. All contribute equally. O The structures with the positive charge on carbon.arrow_forward
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