Bonding- Ionic, Covalent, Metallic - video -solutions

Bonding- Ionic, Covalent, Metallic - video -solutions -...

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Unformatted text preview: nanni (arn437) – Bonding: Ionic, Covalent, Metallic - video – CNS – (87654) This print-out should have 3 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points Use electron-dot notation to demonstrate the formation of an ionic compound involving the elements Al and S. 10. Al + S 3+ 3+ 2− S Al + Al + S + 2− S + S + S + + S + Al+ + Al + Al + 3− −→ AlS Al 3+ Al gives up three electrons to form the S cation and S 2− acquires two electrons anion: S Al + Al + + + S S S + −→ 2− −→ 3+ 3+ Al + Al + S 2− 2− + S 2− −→ Al2 S3 002 10.0 points Covalent bonds involve −→ S − −→ Al2 S3 correct 2. Al + Al + Al + S Explanation: to form the 1. Al + Al + −→ Al+ + S 1 −→ Al3 S 1. a sharing of electrons. correct S 3. Al + −→ 2. a transfer of electrons. 2+ Al 3+ 4. Al + S 2+ 2+ + Al 2+ + Al S 3− S + −→ AlS 3. different charges. −→ AlS 4. electrostatic forces. 3− −→ Al + S 5. Al + Al + Al + Al 2− S + + S + S −→ 3− −→ Al3 S2 S 6. Al + 2+ Al 7. Al + 3+ Al + S S + S − S + 8. Al + Al + + + S + + −→ − S − S + − −→ AlS2 2. covalent −→ 3. metallic correct −→ Al2 S3 −→ + Al + Al + 9. None of these − S S S 003 10.0 points A sea of mobile electrons is characteristic of which bond? 1. ionic S + Explanation: The electrons involved in a covalent bond are typically shared among the bonded atoms. 2− −→ Al2 S Explanation: Definition ...
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This note was uploaded on 09/19/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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