Concept explainers
Interpretation:
A Lewis structure and resonances for this
Concept Introduction:
Lewis structures otherwise known as Lewis dot diagrams or electron dot structures.
The bond between atoms and lone pairs of electrons that is present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol. Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.
Resonance structure is two forms of a molecule where the chemical connectivity is the same but the electrons are distributed differently around the structure. Generally put double headed arrows between two resonance structures.
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Chapter 6 Solutions
Chemistry: The Molecular Science
- Write all resonance structures of chlorobenzene, C6H5Cl, a molecule with the same cyclic structure as benzene. In all structures, keep the CCl bond as a single bond. Which resonance structures are the most important?arrow_forwardWrite the Lewis structure for nitrosyl fluoride, FNO. Using only a periodic table, identify (a) which is the longer bond. (b) which is the stronger bond. (c) which is the more polar bond.arrow_forwardConsider the pyrosulfate ion, S2O72-. It has no sulfur–sulfur nor oxygen–oxygen bonds. (a) Write a Lewis structure for the pyrosulfate ion using only single bonds. (b) What is the formal charge on the sulfur atoms for the Lewis structure you drew in part (a)? (c) Write another Lewis structure using six bonds and two O—S bonds. (d) What is the formal charge on each atom for the structure you drew in part (c)?arrow_forward
- How many electron dots should appear in the Lewis structures for each of the following polyatomic ions? a. ClO b. ClO2 c. S22 d. NH4+arrow_forwardMany monatomic ions are found in seawater, including the ions formed from the following list of elements. Write the Lewis symbols for the monatomic ions formed from the following elements: (a) Cl (b) Na (c) Mg (d) Ca (e) K (f) Br (g) Sr (h) Farrow_forwardWhat possible error(s) exist in the Lewis structure (assume we are trying to represent the best possible Lewis structure for the NO₂S ion knowing N is the central atom in this polyatomic ion)? [:ö==S: N= CO :O: The best structure would have double bond and two lone pairs on each oxygen atom and a single bond with three lone pairs on the sulfur. There are no errors. This is the best possible structure. The Lewis structure above does not minimize formal charges, thus is the not the best possible structure. The nitrogen atom has an expanded octet, and this structure is impossible. The Lewis structure contains the wrong number of electrons, thus this structure is impossible.arrow_forward
- Consider the formate ion, HCO2-, which is the anion formed when formic acid lose an H+ ion. The H and the two O atoms are bonded to the central C atom. a) Draw the best Lewis structure for this ion. b) Are resonance structures needed to describe this structure? c) Would you predict that the C-O bond lengths in the formate ion would be longer or shorter relative to those in CO2?arrow_forwardis this correct ? Draw the Lewis structure of formaldehyde (H₂CO).arrow_forwardThe carbonate anion, CO32- , is a resonance hybrid. Draw all of the important resonance structures for this molecule. If an atom has a nonzero formal charge, be sure the formal charge is shown clearly in the structure. Use the resonance structures to calculate the average formal charge on each O atom (which are all equivalent in the "true" structure). [Note: all of the important contributing resonance structures have octets around each atom that desires an octet.]arrow_forward
- Consider the following ions: NO2−NO2−, CO32−CO32−, and ClO4−ClO4−. For each of these, you should use a Lewis structure that satisfies the octet rule. Which of these ions will exhibit resonance among multiple equivalent Lewis structures that satisfy the octet rule?arrow_forwardWrite the Lewis structure for the NO2- ion. Include resonance structures.arrow_forwardFor the following three Lewis structures, list whether they are correct or incorrect: alt-text for image above: The first image shows a proposed Lewis structure for Freon-13, CClF3, that has a central carbon singly bonded to a three chlorine atoms and a fluorine atom. Each chlorine and the fluorine have 3 lone pairs of electrons around them. The second image shows a proposed lewis structure for the nitrite ion, NO2-, as a central nitrogen atom between two oxygen atoms. The O atom on the left has three lone pairs of electrons and then a single bond between the N. The right O atom has two lone pairs of electrons and a double bond with the N atom. The N atom has a single lone pair of electrons in addition to the double and single bonds with oxygen atoms. The third image shows diazomethane, CH2N2, and the proposed Lewis structure has a carbon singly bonded to two H atoms, then doubly bonded to a nitrogen. The nitrogen is doubly bonded to the second nitrogen, and the second nitrogen has…arrow_forward
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