BOHR DIAGRAMS

Bohr Diagrams:


-Atoms are electrically neutral (the number of protons equals the number of electrons)


- Two different models can be used to describe electron configuration
         -Energy Level Model
         -Bohr Model


- electrons occupy shells which are divided into orbitals


The Bohr diagrams places the number of neutrons and protons in the center and electrons in energy rings around the outside. Each energy ring has a maximum number it can hold

Learned in class:
                     Ring 1 – 2 electrons
                     Ring 2 – 8 electrons (octet)
                     Ring 3 – 8 electrons (octet)
                     Ring 4 – 18 electrons
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                     Ring 5 – 18 electrons
                     Ring 6 – 32 electrons
                     Ring 7 – 32 electrons

The electrons in the outer most energy ring are called valence electrons. These electrons are very important because they are involved in chemical reactions. They can be lost or gained so that the element will have 8 electrons in the outer most ring and become stable. The noble gases already have 8 electrons in their outer ring so they are stable and do not react readily

Now its your turn to try!

Atom Structure:
http://www.youtube.com/watch?v=hpKhjKrBn9s&annotation_id=annotation_736168&feature=iv

Bohr Diagrams:
http://www.youtube.com/watch?v=hpKhjKrBn9s&annotation_id=annotation_736168&feature=iv

Here are some videos on youtube that deal with the Atomic Structure and give a detailed explanation on Bohr Diagrams. Enjoy!

-Post by Ivy Gloria. Picture by Ren Flores