4) Which element has the highest electronegativity? A) Ge B) O C) B D) Ca 5) Which element has the highest electron affinity? A) Ge В) 0 С) в D) Ca E)K 6) of the 3 elements fluorine, bromine, and calcium, has the highest ionization energy and _has the lowest ionization energy. (Note that we are considering the first ionization energy). A) bromine; calcium B) calcium; fluorine C) fluorine; bromine D) fluorine; calcium E) none of these 7) Based upon...
Lewis Diagrams -- Formal Charges What is the formal charge on the C atom in the correct or best Lewis structure for CN-? +7 +6 +5 +4 +3 +2 +1 0 -1 -2 -3 -4 -5 -6 -7 1pts Tries 0/3 How many lone pairs are in the best Lewis structure of SCN-? 1pts Tries 0/5 What is the total number of valence electrons in the Lewis structure of SCN-? 1pts
7. Assign formal charges to each atom of the following molecule. (Note: formal charges of zero are not labeled.] 64- 20 :0 I S -O-y =1" N=N= C=O 6 -4- >= * T T 4-6-4-0 so2-3=0 Hon=c=0 :0 : _Re 00 :0: :0:
:0-CI-O-CI- :O: :O: Formal charge for Cl Formal charge for the bridging O | Formal charge for the terminal O 2 :O: Formal charge for C| Formal charge for the doubly bonded O = Formal charge for the singly bonded O Formal charge for Cl Formal charge for O
QUESTION 1 What are the formal charges on each of the atoms in the AsH4* ion? O A. AS = 0; H=+1 B. As = +1; H = 0 OC. AS = 0; H = 0 D. As = +4; H = -1 E. AS = 0; H = +(1/4)
Calculate the formal charge on oxygen in the electron-dot structure for OCN- 1: o C- -N: -1 O -2 +1 0 0 N
6. Understanding Formal Report Components What should an effective letter of transmittal include? O An announcement of the topic and affirmation of the proposal authorization OA résumé listing previous projects OA review of the formal RFP Which of the following components contains a list of all headings and their beginning page numbers? O Table of contents OList of figures OExecutive summary Which division of a final report contains the introduction, discussion of findings, summary, conclusions, and recommendations? OSupplementary O Front...
Question 6 0.15 pts Consider the following set of successive ionization energies: IE1 = 578kJ/mol IE2 = 1,820kJ/mol IE3 = 2,750kJ/mol IE4 = 3,600kJ/mol IE5 = 13,300kJ/mol To which second period element do these ionization values belong? Enter your answer as a chemical symbol (ex: He).
6. What is the correct product for the following reaction? NaOCH3 OCH3 CH3OH Hyco A: O B: O C: D: О COCH3 CO2CH3 CO2CH3 CO2CH3 7. Provide a mechanism for the reaction in problem (6). Be sure to use the correct arrow notation and include relevant lone pairs and formal charges. 6. What is the correct product for the following reaction? NaOCH3 OCH3 CH3OH Hyco A: O B: O C: D: О COCH3 CO2CH3 CO2CH3 CO2CH3 7. Provide a mechanism...
6) Of the following, which element has the highest first ionization energy? B) beryllium 6) A) boron C) lithium D) carbon 7) Identify the compound with covalent bonding A) H20 B) He C) s D) NaBr E) Na 8) How many lone pairs are on the Br atom in BrCl2-? A) 0 B) 1 c) 2 D) 3