Chemical Bonding, Molecular Geometry

Chemical Bonding, Molecular Geometry - row- 3 energy levels...

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Chemical Bonding, Molecular Geometry Atomic structure Proton (+1) Neutron (0) Electron (-1) Superscript- mass number Subscript- number of protons Mass number – proton number = # of neutrons Chemical Bonding Octet Rule: atoms tend to gain, lose, or share electrons until they are surrounded by eight valence electrons o An ionic bond results from the powerful electrostatic forces that exist between oppositely charged ions o When atoms are similar in their tendencies to lose or gain electrons, they share electrons to form a covalent bond Ionic bonds o Na 3 rd
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Unformatted text preview: row- 3 energy levels 1 group- one valence electrons o Cl 3 rd row- 3 energy levels 7 th group- 7 valence electrons o reactions always happen in the least energetic way o lose one electron instead of gain 7 electrons o Na+=Isoelectronic with Ne, same number of electrons o Ion = charged particle o Cl-=isoelectronic with Ar o 8 th group- inert, other groups want to achieve o cation- positive ion o anion- negative ion What is the chemical formula of MgCl? o MgCl2 o MGO Covalent bond Double bonds Triple bonds Polyatomic molecules CO2...
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This note was uploaded on 02/17/2011 for the course CHEM 004 taught by Professor Zysmilich during the Spring '06 term at GWU.

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