Lewis Dot Structures.

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Presentation transcript:

Lewis Dot Structures

Do your best to answer on your own. Review? What is a valence electron? What is the lewis dot structure of: Lithium Silicon Bromine Do your best to answer on your own.

Valence Electrons The valence electrons are the electrons in the last shell or energy level of an atom. http://dl.clackamas.cc.or.us/ch104-06/valence_electrons.htm Why are they important?

Valence Electrons How many for each element? How can you tell how many valence electrons an atom has? www.chemprofessor.com/ptable5.gif

Lewis Dot Structures What is the lewis dot structure of: Lithium Silicon Bromine

Lewis Dot Structures What is a lewis dot structure? Draw a lewis dot structure and explain where each piece comes from. How we know how many electrons can be in each elements? What do we do about transition metals? Lone Pairs? Octet Rule?

Lewis Dot Structures Draw the lewis dot structure for lithium bromide:

Lewis Dot Structures Draw the lewis dot structure for methane (CH4):