Recitation Worksheet Eleven Olivia Beavers UGA ID Name Textbook Chemistry Chemical Reactivity by John C Kotz Paul M Treichel John R Townsend David Treichel 11th Edition Copyright 2024 Instructions Otb71748 This recitation worksheet covers Ch 8 3 8 7 Please enter your first and last name as it appears on the eLC roster do not use a nickname that is not reflected in eLC Your UGA myID is a combination of letters and numbers example Dr Seivert s MyID is mds73312 Do not use your 81x number Your completed worksheet has to be submitted to Gradescope You have multiple options for submission o You may use an app to annotate the worksheet by placing your answers in the answer boxes and showing your work when appropriate Afterward submit the worksheet to Gradescope You will not need to upload anything to eLC o You may print out the worksheet write your answers in the answer boxes and show your work on it when appropriate Afterward convert the worksheet to a PDF and submit to Gradescope You will not need to upload anything to eLC If you do not have access to a printer you may type your answers directly into the worksheet PDF and then submit it to Gradescope Write your work on separate sheets of paper convert them to a PDF and upload to the appropriate dropbox on eLC o There is a Gradescope app available for both iOS and Android devices that allows you to scan and submit your printed work or you can submit your fillable PDF directly o The following criteria must be met to be eligible for full credit o You must make sure the pages are in the correct order and have the same layout as the original worksheet when submitting to Gradescope regardless of your submission type o Answers must be written in the corresponding answer boxes o You must show your work when appropriate This worksheet is due no later than 9 00 AM on the Saturday of the recitation A periodic table and formula sheet are attached to the end of this worksheet Please keep these attached to your worksheet in the correct order when submitting to Gradescope week 1 What is true about choosing the best Lewis structure Select any that apply and answer using capital letters with no spaces e g ABCDE BDE A Negative formal charges should go on the least electronegative atom B The best Lewis structure minimizes all formal charges C An atom can only expand its octet if there are excess electrons after all atoms have a filled octet when drawing the Lewis structure D Only atoms with a principal quantum number of 3 or higher in their valence electrons can expand their octet E An atom in row 3 or greater can expand its octet to minimize its formal charge in the best Lewis structures 2 Consider two possible ways that the Lewis structure of the molecule BF3 can be drawn shown below I Which Lewis structure above satisfies the octet rule for all of the atoms Write the corresponding letter for the structure A or B II Which Lewis structure minimizes the formal charges for all of the atoms Write the corresponding letter for the structure A or B III Which Lewis structure above is best for BF3 Write the corresponding letter for the structure A or B B A A 3 Three different Lewis structures of the molecule H2CSO are provided below Provide the formal charges of carbon oxygen and sulfur for each structure Answer with an integer and sign e g 4 2 or with a zero if no charge is present I Structure A Carbon II Structure B Carbon III Structure C Carbon O 0 O Oxygen Sulfur Oxygen Sulfur H 0 I 1 0 th Oxygen Sulfur IV Which Lewis structure above is best for H2CSO Write the corresponding letter for the structure A B or C in the box below B 5 0 4 What is the formal charge on iodine in the iodate ion in its best Lewis structure What is the oxidation state of iodine in the iodate ion Answer with an integer and sign e g 4 2 or with a zero if no charge is present I Formal charge II Oxidation state 5 Draw the best Lewis structure of OPCl How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 6 1 0 1 I 4 3 6 How many lone pairs does the sulfur have in the correct Lewis structure for H3S Answer by using an integer e g 0 1 etc 7 How many bonding pairs surround the sulfur in SO42 in its best structure Answer by using an integer e g 0 1 etc 8 Draw the Lewis structure for XeF2 How many lone pairs are present on the central atom Answer by using an integer e g 0 1 etc 9 Which of the following Lewis structures would be an exception to the octet rule in their best structure Select any that apply and answer using capital letters with no spaces e g ABCDE BDE A CBr4 B XeF4 C NCl3 D PO43 E BCl3 I 0 0 5 10 Draw the best Lewis structure of CH3CCH How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 11 Draw the best Lewis structure of a hypothetical molecule MX3 Both the M and X atoms have 7 valence electrons each and M will be your central atom In addition the atom M may expand its octet but X cannot How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 2 0 10 I I 0 5 12 Draw the best Lewis structure of NH2CH2CH2COOH How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 13 The best Lewis structure of SF3N has sulfur as the central atom Draw the best hypothetical Lewis structure of this molecule with nitrogen as the central atom How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 3 0 I I 5 14 Draw the best Lewis structure of CH2CHCCBr How many single bonds double bonds triple bonds and lone pairs are present Answer by using integers e g 0 1 etc I Single bonds II Double bonds III Triple bonds IV Lone pairs 15 Which of the following are true of the best Lewis structure for NCO Assume the atoms bond in the order they are written Select any that apply and answer using capital letters …