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Unformatted text preview: te with nonpolar ones. • Identify the polar & non‐polar area of these molecules: Lipid
molecule Carbohydrate Amino acid Ionic Bond Formation
• Atoms that gain or lose an electron subsequently gain or lose a negative charge and form ions.
• Ionic bonds can form between atoms with very different electronegativities (example: NaCl).
– The more electronegative atom (Cl) strips the electron from the other atom (Na), generating oppositely charged ions that attract one another & form an ionic bond: e‐ • •
(11p/11n/11e‐) lose outer e‐ (17p/17n/17e‐)
gains e‐ *molecules can also be ions Ionic bond formation Na+:
(11p/11n/10e‐) (17p/17n/18e‐) cation (+1)
anion (‐1) Hydrogen Bonding
• Electrical attraction between a hydrogen atom possessing a partial positive charge to an atom having partial Electrical negative charge (typically N or O):
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This note was uploaded on 08/16/2011 for the course BIOL 1361-1362 taught by Professor Any during the Spring '08 term at University of Houston.
- Spring '08