Find the Lewis Dot Structure and covalent bonding

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Find the Lewis Dot Structure and covalent bonding

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CH 135 (use SF, units; show all work; answers in box) 1: For each pair of elements determine whether they will exhibit ionic or covalent bonding. Then write the empirical formula and name of a reasonable resulting compound. a: Sr and Cl b: Si and Br 2: Write the Lewis dot symbols of the reactants and products in the following balanced reactions. a: 2 K + H2  2 KH b: 6 Rb + N2  2 Rb3N c: 3 Ca + 2 P  Ca3P2 d: 4 Ga + 3 O2  2 Ga2O3 3: Using only a periodic table, list the following bonds from least polar to most polar: I - F, K - C, P - P, Si - I < < < 4: Write the Lewis structure for these molecules. a: NBr3 b: SiH4 c: CCl2O d: N2F4 e: HOBrO (structural) f: PF2OH (structural) 5: Classify these bonds as nonpolar (covalent), polar covalent, or ionic. Briefly explain why. If it is polar or ionic, state which element it is polar towards. a: Cd - S b: S - Si c: N – S d: H – P 6: Write the Lewis dot structures for these substances and find the formal charges: a: N22- b: NH2 1- c: NO + d: NH4+1 e: KCN 7: Find the Lewis dot structure. Find the formal charges. a: HCO3O H O C O b: CH2NO2- H O C H N O 8: Draw all the resonance structures for the NO21- ion. For each structure, find the formal charges. 9: Write the Lewis dot structure for TeF2, TeF4 and TeF6. Is the octet rule satisfied for Te? 10: a) Do the LDS for IO31- (the iodate ion). Explain why IO31- is stable but FO31- (fluorate) does not exist. 10. b) Find the Lewis Dot Structure (LDS) of each of the following substances. Na2SO3 Br2O7 (Hint: Structural formula is BrO3OBrO3.) C5H7N (Hint: Structural formula is (CH3)2CCHCN.) 11: For each of the following substances find the LDS, then draw the line structure. Then write the approximate angle(s). a: S3 b: SiH3F c: CNCl d: SF42- e: AsCl41- 12: For each of the following substances find the LDS, then write the name of the geometry. Then write the hybridization. a: BF41- b: PF3 c: BO33- d: ICl21+ e: ICl41- 13: For each of the following substances find the LDS, then draw the line structure. Then determine if it is polar or nonpolar. a: AsBr61- b: AlH41- c: TeH2 d: NCl3 e: CF2S f: OI2 (O is central) 14: Describe the geometry around each of the 3 central atoms in the CH3COCN molecule. (Hint: O is external.) 15: Arrange the following molecules in order of increasing polarity. Show work! AsCl3 AsBr3 AsF3 AsI3 16: Arrange the following molecules in order of increasing dipole moment. Show work! CF4 H2O NF3 SeBr2 17: Arrange the following molecules in order of increasing polarity. Show work! 18: How many sigma and pi bonds are there in each of these molecules? a: N2H2 b: CH3CHCHCHCH2 c: NF2CCOH 19: Draw Lewis dot structures and give requested information. a: SeO3 polar or nonpolar? b: SH2O name the geometry c: CH2F2 show dipole direction 20: a: The XeOF2 molecule has two different isomers (forms). Do the LDS of XeOF2. b: Do both line structures. Do they have the same polarity? (Xenon, by coincidence, has similar electronegativity as other elements in its diagonal.) ...
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The26thChemist
School: Duke University

Hi Nonorino, chec...

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