CHEM 1A03 Chapter Notes - Chapter 10: Octet Rule, Formal Charge, Lewis Acids And Bases

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Aadil Merali Juma

Document Summary

Coordinate covalent bond an atom contributes both of the electrons to a shared pair: eg/ nh3 + h+ nh4+ 10. 3 polar covalent bonds and electrostatic potential maps. Positive point charge will be attracted to an electron-rich region electrostatic potential will be negative. If the point charge is placed in an electron-poor region, the point charge will be repelled electrostatic potential will be positive: red, the low energy end of the spectrum most negative electrostatic potential. Ionic bond typically one atom holds more charge than the other. Electronegativity describes an atom ability to compete for electrons with other atoms to which it is bonded. Increases up a group and across a period. The lower the en, the more metallic it is. The higher the en, the more nonmetallic it is. As the ionization energy increases across the period we expect the electronegativity to increase. En electronegativity difference, the absolute value of the difference in en values of the bonded atoms.