Chemistry ppts. #9 - Chapter 3 Compounds: Putting Particles...

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Chapter 3 – Compounds: Putting Particles Together 9/8/10
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The Octet Rule Atoms react with other atoms in order to become more stable. The octet rule states that atoms react with other atoms to achieve a total of eight electrons in their valence shell. Gaining or losing electrons is one way that an atom can achieve a valance octet.
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In Search of an Octet Part 1: Ion Formation Ions formed when an atom gains extra electrons are called anions . The ion formed then becomes isoelectronic with another atom.
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In Search of an Octet Part 1: Ion Formation Ions formed when an atom loses electrons are called cations .
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Determine the number of protons and electrons the following ions. Sample Problem p = 19 e = 18 p = 16 e = 18 - 2 S + K
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Trends in Ion Formation Metals lose electrons to form cations and nonmetals gain electrons to form anions.
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Trends in Ion Formation For main-group elements, the position of the atom on the periodic table helps determine what its charge will be if it forms
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This note was uploaded on 11/15/2011 for the course BIOL 1125 taught by Professor Osborne during the Fall '10 term at Georgia Southern University .

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Chemistry ppts. #9 - Chapter 3 Compounds: Putting Particles...

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