We can draw three inequivalent Lewis structures for the arsenite ion , AsO,". The concepts of formal charge and electronegativity can help us choose the structure that is the best representation. 1. Assign formal charges to the elements in each of the structures below. Note: Count oxygen atoms starting from the left for each structure. 3- As. As :0: :O: B Formal Charge As 01 02 03 2. The best Lewis structure for AsO is ot

Consider the Lewis structure below. What is the formal charge on Sb? CI CI CI Sb CI CI O a. -2 O b.-1 | O c. +2 O d. 0 O e. +1 е. 29 TOrU 13) 2914

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Question8 a. Write Lewis structures that obey the octet rule for the following species. Assign the formal charge for each central atom. b. If the Lewis structures are not minimum formal charge (close enough to 0), write another Lewis structure involve minimum formal charge, a. SO4²- b. CIO4 d. PO43- g. CIO3

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?

a) For the three Lewis structures shown below, determine the formal charge of each of the three atoms (S, C, and N). Structure 1 Structure 3 Atom S Q Z EC- -N: Structure 1 .. Structure 1 Structure 2 Structure 3 : S Structure 2 EN: Structure 2 Structure 3 -N b) Which of the three structures listed above is the best Lewis structure for this molecule?

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Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure H-C=C: : 0: :01C-0: C. [H-] Is the proposed Lewis structure reasonable? Yes. O 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:* O Yes. O No, it has the wrong number of valence electrons. The correct number is: O O O No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 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:* 0 * 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". X 3

[References] a. For C102F, use formal charges to choose the Lewis formula that gives the best description of the electron distribution. :F: =Cl=0 :F: :F: b. For SO3, use formal charges to choose the Lewis formula that gives the best description of the electron distribution. :O: :o: :o: :O:

Q15. Draw the Lewis electron dot structures for these molecules, (M atomic number is 6 and N atomic number is 16) Write resonance structures where appropriate: 1. (MN;)- 2. MN2 3. MN