Draw Lewis structures and assign formal charges for the following compounds and ions. Note any resonance forms and explain which resonance form is the most important. Make a note of any other unusual features (such as "this one doesn't work" and why- what are the shortcomings of the model.) CO3²- CO NO₂ CNO (include isomers) Al₂Cl6 B₂H6 O2 (paramagnetic) H3O+ LiF IF7

Draw Lewis structures and assign formal charges for the following compounds and ions. Note any resonance forms and explain which resonance form is the most important. Make a note of any other unusual features (such as "this one doesn't work" and why- what are the shortcomings of the model.) CO3²- CO NO₂ CNO (include isomers) Al₂Cl6 B₂H6 O2 (paramagnetic) H3O+ LiF IF7

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter7: Covalent Bonding

Section: Chapter Questions

Problem 68QAP: Consider the pyrosulfate ion, S2O72-. It has no sulfurâ€“sulfur nor oxygenâ€“oxygen bonds. (a) Write...

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Consider the pyrosulfate ion, S2O72-. It has no sulfurâ€“sulfur nor oxygenâ€“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 Oâ€”S bonds. (d) What is the formal charge on each atom for the structure you drew in part (c)?
The 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.]
Draw Lewis structures and assign formal charges for the following compounds and ions. Note any resonance forms and explain which resonance form is the most important. Make a note of any other unusual features (such as "this one doesn't work" and why-what are the shortcomings of the model.) 2- CO3²- B₂H6 CO O₂ (paramagnetic) H₂O* LiF IF, NO₂ CNO (include isomers) Al₂Cl6
Covalent bonds: H―HC―HO―HO═O C≡O Bond energy (kJ/mol):4364154654981080Calculate the enthalpy change (H, in kJ/mol) for the following reaction and indicate whether the reaction is exothermic or endothermic.(*BE for C═Oin CO2)(a) CH4(g)+ H2O(g)CO(g)+ 3H2(g);
Write a Lewis structure for formaldehyde, HC(=O)H, showing all valence electrons. • You do not have to consider stereochemistry. Explicitly draw all H atoms. • Include all valence lone pairs in your answer. ● TAYY Sn [F
Draw the correc (best) Lewis structure (LS) for the ionic compound K2SeO3 (on looose leaf paper--NOT TO BE SUBMITTED) and then answer the following questions.(NOTE: Use the cardinal numbers 0, 1, 2, 3, and so on for any quantity required)a) What charge does the K ion have in this compound? (give size & sign of charge: e.g., 1+, 2-, etc.) b) What charge does the SeO3 ion have in this compound? (give size & sign of charge: e.g., 1+, 2-, etc.) c) How many lines, if any, attach each K ion to the SeO3 ion? d) How many valence electrons does the SeO3 ion (alone) have? e) How many single bonds does the LS of the SeO3 ion have? f) What is the number of lone electron pairs in the LS of the SeO3 ion?
What are the formal charges on the sulfur (S), carbon (C), and nitrogen (N) atoms, respectively, in the resonance structure that contributes most to the stability of the thiocyanate ion, SCN ? The possible resonance structures for the thiocyanate ion, SCN , are $=c=N]' 5-c=Ñ]" [:s=c-N:] ' Structure A Structure B Structure C Express your answers as integers separated by commas. • View Available Hint(s) formal charge on sulfur (S), carbon (C) and nitrogen (N) atoms = Submit
ClO2F2+(a) Draw all of the possible Lewis structures (including reasonance structures) of the following compounds.(b) Label the formal charge for each atom.(c) Determine which resonance structure(s) is(are) the better/best and briefly explain. Question 5. Finish the questions regarding the molecule/ion in Question 4 above. (a) Draw the best Lewis structure with a three-dimensional fashion by using dash and solid wedges.(b) Name the electron geometry and molecular geometry of the molecules. Identify the bond angles. Note: For the non-standard bond angels, use “<” or “>” to suggest the deviation of the bond angles from the standard bond angel. (c) Determine wether the molecule is molecule is polar or non-polar. Briefly explain.
Based on the atom connectivity shown bellow,evaluate the four resonance structure for the thiosulfate ion S2O3 ^2-. Use curved arrows to indicate how you get from one resonance structure to another. Assign formal changes to all atoms and determine which of these resonance structure is the most stable based on a formal charge analysis Explain your answer thoroughly. Look at the picture.
Choose the best Lewis structure for C2H30¯. (It will help to work out the missing formal charges for the atoms in these different structures) [Image description: Lewis structure A two C atoms doubly bound to each other. One C has two other single bonds to H atoms. The other C has one more single bond to a H atom and one more single bond to a O atom. There are three electron pairs on O. Lewis structure B has a C atom and a O atom doubly bound to each other. The C has two other single bonds to H atoms. The O has one more single bond to a H atom and one more single bond to a C atom. There are three electron pairs on this C. Lewis structure C has a O atom and a C atom doubly bound to each other. The O has two other single bonds to H atoms. The C has one more single bond to a H atom and one more single bond to another C atom. There are three electron pairs on this C. Lewis structure D has two C atoms singly bound to each other. One C has an electron pair plus two more single bonds to H…
Write down the Lewis dot structures of each of the following molecules. Check the formal charge in each case and make use of it to decide on the correct structure where necessary. In cases where delocalised bonding occurs show all the resonance forms. In each case show all steps in arriving at the structure.a) CH2Cl2b) CH3CH2NH3+(here the 3 H atoms are attached to one C atom, and 2 H atoms and a Natom to the other C atom)c) CH3NNN (here 3 H atoms and 1 N are attached to the C atom and the N atoms form a 3atom chain). [Challenging: hint, share leftover electron pairs equally between the two Natoms in the middle after you have completed the octet on the end N]d) NCl3e) ClO3−(chlorate anion = chlorine bonded to 3 oxygen atoms, Hint: Cl does not obey theoctet configuration)
Draw the most plausible resonance structure for the molecule N2O3 (atomic arrangement is ONNO2). Be sure to include all lone pairs and non-zero formal charges.