Which of the following bonds would you expect to be the strongest? O A-A (bond length = 121 pm) O A-Z (bond length = 107 pm) O A-X (bond length = 183 pm) O A-D (bond length = 142 pm)

Arrange the single covalent bonds within each set in order of INCREASING polarity. If: • most polar is b • medium polarity is c • least polar is a this leads to the following input: acb (To answer this question you may consult the table of electronegativity values in the table below.) 1A 2A Li Be 1.0 1.5 Na Mg 0.9 1.2 3B 4B 5B 6B 7B K Ca Sc Ti V 0.8 1.0 1.3 1.5 Rb Sr 0.8 1.0 1.2 Y Zr 1.4 <1.0 1.0-1.4 Cr Mn 1.5 1.6 1.6 Nb Mo 1.6 1.8 Cs Ba La Hf Ta 0.7 0.9 1.1 W 1.3 1.5 1.7 1.5-1.9 2.0-2.4 Fe 1.8 H 2.1 Re Os 1.9 2.2 8B Co Ni 1.8 1.8 1B 2B Cu Zn 1.9 1.6 Ir Pt Au 2.2 2.2 2.4 2.5-2.9 3.0-4.0 Te Ru Rh Pd Ag Cd In 1.9 2.2 2.2 2.2 1.9 1.7 1.7 3 A 4A 5A 6A 7A B N 0 F C 2.5 3.0 3.5 2.0 4.0 Hg 1.9 Al 1.5 Si P S CI 1.8 2.1 2.5 3.0 Ga Ge 1.6 As Se 1.8 2.0 2.4 Br 2.8 Sn Sb Te I 1.9 2.1 2.5 1.8 TI Pb Bi Po 1.8 1.8 At 1.9 2.0 2.2

+ 1 on CI- CI Q A Z @ 2 Click to edit molecule W S ●● command X Carbon tetrachloride, (CCI) is a solvent used in dry cleaning. Draw the Lewis structure of CCI and then determine the ideal bonding angle(s) for the CI-C-CI bond(s). www # 3 CJ Cl: . E D 8.0 F3 C $ 4 R JAN 25 A a FA FLO % 5 V T G Question 1 of 26 6 B FG Y H & 7 A) 90° B) 109.5° C) 120° D) 180° F7 לון U N 8 J DII FB I M ( 9 K F9 zoom O O H F10 L P command F11 { J F12 = ? option 1

Which one of the following bonds is the most polar?(electronegativities: C = 2.5, O = 3.5, Cl = 3.0, N = 3.0, H = 2.1)

Arrange the highlighted bonds in the table below in decreasing order of polarity. That is, pick 1 for the most polar bond, pick 2 for the next most polar bond, and so on. bond polarity 1-7 (Choose one) 0- (Choose one) (Choose one) ▼ G

4 Part A wwwwROT CH,CHCH,CH,CH CH3 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates toolbars. DCH EXP CONT ? י ①を Marvin JS by ChemAxon H N о S CI Br P F 9:59 AM

3. The following Lewis structures are incorrect due to the missing charge. Add charge to the proper atom of the Lewis structures below. .. a) .0 11 .C. H. b) c) H-N-O-H H-C=N-H エ-N-H 工 エ

CH3CH₂-Br: -:NH3 Draw the molecules on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars, including charges where needed. The single bond is active by default. NN [1] 1 L H 12D EXP. CONT. Marvin JS by ChemAxon I UZ OSJ H с N CI Br I P F

MINDTAP Formal Charge 01 Three inequivalent Lewis structures for carbon dioxide, CO₂, are shown below. Use the concepts of formal charge and electronegativity to choose the structure that is the best representation by answering the questions below. 1. Assign formal charges to the elements in each of the structures. C 0₂ :O-c=0: A Use the References to access important values if needed for this question. 2. The best Lewis structure for CO₂ is 0₁-C=0, B :0,=C-0₂: Q Search this cours C