Electron Dot Notation

Electron Dot Notation clarifies the quantity and the ordinance of the valence electrons, thereby stands the element symbol for the atomic core and the dots equal the valence electrons. One dot equals one valence electron. Staring at the first dot placed on the left top of the element symbol, the second one, which also equals the second valence electron, will be placed on the right top of the element symbol, the third will be placed then on the upper right side, of the same element symbol, the fourth will be placed on the right bottom of the symbol, continuing the fifth dot is to be placed on the lower left side, the sixth dot will be placed on the lower right side, and the seventh one hall be placed on the left part of the elements symbols bottom, last the eighth one would end up being placed on the upper left side to the elements symbol. The Maximum of dot, standing for electrons being placed around one symbol equals eight(also called the octet rule), which is logically explained by the fact that the maximum number of valence electrons a element can hold equals eight, even though this depends on the element it self.
This sort of formula to structure dots for elements around an element symbol, is also known as Lewis-formula.

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⁸ X ³
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Example problems + solution:
~ given is the element Sodium [ Na ]
to get the number of valence electrons of this particular element, one need to take a look at the periodic table of elements, and find sodium under its chemical abbreviation Na, which in this case possesses one valence electron on its outer orbit, there for there is one dot needed. This dot is to be placed, like explained, on the left top of the element symbol.
This would look then like that in the end:

Na


~ given is the element Chloride [ Cl ]
to get the number of valence electrons of this particular element one need to take a look at the periodic table of elements, and find chloride under its chemical abbreviation Cl, which in this case possesses seven valence electrons. Thereby there are needed seven dot, placed in the given order to do.

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