Chemical bonding
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Transcript of Chemical bonding
Ionic Bonding
Resonance Structures
VSEPRBasic Shapes3-D NotationHybridization (Lab)
M olecular Geom etries
Octet Rule Polar M olecules
Lew is Structures Covalent Bonding
Types of Bonds
Chemical BondingChemical Bonding
Chemical bond: attractive force holding two or more atoms together.
. The strength of bonds varies considerably; there are "STRONG BONDS" such as covalent or ionic bonds "WEAK BONDS" such as dipole-dipole interactions, the London dispersion force and hydrogen bonding.
OCTET RULE
The octet rule says that atoms tend to gain, lose or share electrons so as to have eight electrons in their outer electron shell. There are many bonding situations where it does not apply.
EXCEPTIONS TO THE OCTET RULE
There are three general ways in which the octet rule breaks down:
1. Molecules with an odd number of electrons
2. Molecules in which an atom has less than an octet
3. Molecules in which an atom has more than an octet.
CHEMICAL BOND
Intramolecular forces
• covalent• Ionic• metallic
Intermolecular forces
• Hydrogen bond• Other noncovalent
forces
Ionic bond results from the transfer of electrons from a metal to a nonmetal.
Covalent bond results from sharing electrons between the atoms. Usually found between nonmetals.
Metallic bond: attractive force holding pure metals together.