#38 Electronic Configuration and Bohr Models

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Presentation transcript:

#38 Electronic Configuration and Bohr Models

*If you know the elements period and group location, then that helps determine how many shells the atom has, and the number of electrons in each shell. For example: Lets look at Lithium How many shells does it have? Electrons? End Goal: Li

*ELECTRONIC CONFIGURATION Electronic configuration is a short-hand way of telling you how many electrons you have in each shell of an atom. You must completely fill the first shell BEFORE moving to the next shell.

*Period # *# of shells *Maximum Electrons 1 2 3 4

Remember 1st shell - 2 electrons max 2nd shell - 8 electrons max 3rd shell - 8 electrons max 4th shell - 18 electrons max And so on… How many electrons does it have? How many shells will it have?

*ELECTRONIC CONFIGURATION Nitrogen has 7 electrons 7 N 14

*ELECTRONIC CONFIGURATION Nitrogen has 7 electrons Configuration: N= 2,5 7 N 2 in 1st shell 5 in 2nd shell 2 + 5 = 7 14

Lets try this one together

Write the Electronic configuration for these

Bohr Model When drawing out an atom it is important to understand electronic configuration. *The Bohr model is a visual representation of an atom showing all protons, electrons, neutrons, and electron cloud. Ex: Beryllium Bohr model: Configuration:

Bohr Model When drawing out an atom it is important to understand electronic configuration. *The Bohr model is a visual representation of an atom showing all protons, electrons, neutrons, and electron cloud. Ex: sulfur Bohr model: Configuration:

Bohr Models