Worksheet_5 - 5. In which case is the bond polarity...

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Dr. Ramesh Arasasingham WORKSHEET 5 1. In which pair do both compounds exhibit predominantly ionic bonding? a) PCl 5 and HF d) NaF and H 2 O b) Na 2 SO 3 and BH 3 e) RbCl and CaO c) KI and O 3 2. Which of the following bonds is least polar? a) C-O d) Br-Br b) H-C e) they are all nonpolar c) S-Cl 3. Consider the bonds formed between the following pairs of atoms. Mg-Cl O-O Hg-Cl C-O Identify the atom that carries a positive charge in each case. Classify each bond as mainly ionic, polar covalent, or nonpolar covalent. 4. Order the bonds in each of the following groups in order of increasing bond polarity. (N-O, N-F, C-F) (C-F, C-Cl, C-Br) (Cl-Cl, F-Cl, F-Br, Br-Cl)
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Unformatted text preview: 5. In which case is the bond polarity incorrect? 6. Draw Lewis structures, including resonance structures where necessary, and calculate the formal charge on each atom for the following molecules. O 2 PF 5 SeF 2 OCS I 3-O 3 BrF 3 SF 4 7. Use Lewis structures to identify which compound you would most likely be successful in synthesizing: SiF 4 or OF 4 . Explain. 8. Use Lewis structures to identify which compound you would most likely be successful in synthesizing: SF 6 or OF 6 . Explain. 9. In SCN-which bond is stronger, S-C or C-N? Explain. H F K O Mg H Cl I Si S e) - + + -d) c) - + b) - + + -a)...
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