chem notes

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Bohr-Rutherford Diagrams

used to represent atoms

Valence electrons are the electrons in the outermost energy level. Number of valence electrons determines property

The electrons are involved in bonding and chemical reactions (valence shell or level)

Stable Octet and the octet rule

A full valence shell ( 8e-) confers stability on an atom (stable octet)

this is why the noble gases are inert (unreactive)

Atoms combine in such a why that they each have 8 electrons in their valence shell

Quantum Mechanics Model of an Atom

Since its important to know the location and the speed of an e- it is impossible to know how an e- travels in an atom

In addition, an a