Ch 5 Student Notes

Ch 5 Student Notes - 1 Chapter 5 Chemical Bonding: The...

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1 Chapter 5 Chemical Bonding: The Covalent Bond Model Atoms with similar ionization energy and electronegativity DO NOT form ionic bonds. There is NO electron transfer! Electron pairs are shared to form a covalent bond.
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2 A covalent bond is a chemical bond resulting from two _______ attracting the same shared _________. Fig 5.1 Electron sharing can occur only when electron orbitals from two different atoms overlap. H · + · H H : H H H H 2 Each atom in H 2 has the electron configuration of ____
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3 Ch 5.2 Lewis Structures for Molecular Compounds . . . . . . H · + · F : H : F : or H - F : . . . . . . bonding nonbonding electrons electrons F, with ___ valence electrons, forms 1 covalent bond. O, with ___ valence electrons, forms 2 covalent bonds. Nonbonding electrons are also called _______ _______ .
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4 N ___ valence electron 3 covalent bonds C ___ valence electron 4 covalent bonds The number of covalent bonds formed by a nonmetallic element is directly correlated with the number of electrons it must share in order to obtain an ___________ of electrons.
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5 Ch 5.3 Single, Double, and Triple Covalent Bonds Some atoms must share _______ than one pair of electrons to obtain an octet of electrons. Single bond - 2 atoms share 1 pair of e Double bond - 2 atoms share 2 pairs of e Triple bond - 2 atoms share 3 pairs of e . . : N · · N : : N ::: N : . . : N N : 1 triple bond each N in N 2 has an _______
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6 Carbon dioxide has ____ double bonds . . . . . . . . . : O · : C · · O : : O :: C :: O : . . . . . . : O = C = O : each atom in CO 2 has a complete octet
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7 Supplemental material Covalent bonds, bond energy, and bond length Single Double Triple bond energy increases bond length ________ ethane ethylene acetylene
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8 Supplemental material: Sigma and Pi Bonds ethylene double bond = 1 sigma ( σ ) bond & ___ pi ( π ) bond σ bond π bond, 2 overlapping p orbitals (2 lobes/orbital) restricted motion acetylene triple bond = 1 σ bond & ____ π bonds
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9 Ch 5.4 Valence Electrons and Number of Covalent Bonds Formed Group VIIA - 7 valence electrons -
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This note was uploaded on 06/03/2011 for the course CHM 123 taught by Professor Woodward during the Fall '08 term at Ohio State.

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Ch 5 Student Notes - 1 Chapter 5 Chemical Bonding: The...

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