G.N. Lewis, in ~ the college of California at Berkeley devised a simple way to recognize the nature of the chemistry bond in both ionic and molecular compounds. His method rests upon concentrating on the valence electron of the elements. He represents this valence electrons together "dots" approximately the four sides the the element symbol.
Depending on just how your teacher was taught, this may be slightly different. The very first 2 valence electron go together (I was taught to place them on top), climate one on each side walking clockwise (3 o"clock, 6 o"clock then 9 o"clock).

You are watching: Al 3+ lewis dot structure


Then copy up going clockwise (3 o"clock, 6 o"clock then 9 o"clock). If you have actually 5 valence electrons as Nitrogen does, protect against after 5 dots.

Kernal- stood for by the symbol. It is the nucleus and also the inner electron of one atom or ion

Valence Electrons- stood for by the dots. The electrons in the external most energy level of an atom or ion.

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Now take this number and place a period for each valence electron.

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Oxygen it s okay 6 dots.

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Chlorine gets 7 dots.

NOTE****There is an order we fill the dots.

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The first 2 go with each other (I was taught to start on top, so teachers begin on the side), then you location one on each side before pairing lock up.

So that looks prefer this, depending on how plenty of valence electrons us have.

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Real Examples
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IonsIons have charges . A full octet of electron (8 dots) is a steady configuration. Oxygen would need 2 an ext electrons to it is in stable. Well that is what the does. Take away 2 electrons and becomes stable. The now has actually a 2- charge.

See more: Fresh Ground Pepper Vs. Pre-Ground Pepper, Fresh Vs Pre

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Metal ions space a small different. They obtain to 8 electron by losing their valence electrons and using the complete inner electron level.It will have actually no dots, and a optimistic charge. Al had actually 3 valence electrons and loses lock all. That will have actually a 3+ charge and look favor this.
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So because that Ions, steel ions have actually no valence electrons and also the nonmetal will have actually 8.Metal are losers and are positive. Nonmetals gain and are negative.Chemical demonstration Videos