Chemistry: 6.1 Lewis Dot Structures

Today we're learning all about diagrams that tell us how many valence electrons an element has. Just remember not to go judging an element by its valence electrons. It's what's inside that counts.

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Transcript

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exciting one. After all, these dots will

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indicate to the world just how many

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valence electrons each element has in [Lewist dot diagram of an element]

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his valence shell, which can be a little

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embarrassing too, but the thrill of

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showing off one's dot more than makes up

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for the mild humiliation there. Today,

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lithium, nitrogen, and neon have made [Lithium, nitrogen and neon sitting outside a room]

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their way to the DLD--the Department of

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Lewis Dot--and are eagerly awaiting their

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big moment.

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Neon finally gets her number called, and [Neon walks through door]

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after taking a brief test and having an

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awful photo taken, she was awarded

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with eight bright shiny dots: two above, two to [Neon with 8 dots]

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the right two below, and two to the left. Now

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everyone Neon bumps into will know that she's [People bumping into Neon on the street]

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got two electrons in each of her four

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orbitals. Well, they'll also know that

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she's in group eight on the periodic

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table, since the number of valence

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electrons is always equal to an element's

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group number. Her chances of getting

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asked to homecoming this just went way up.[Boys asking Neon to homecoming]

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Nitrogen is next to go, and while he

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isn't giving as many dots as neon, he's

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still awfully pleased with his five [Nitrogen with 5 dots]

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brand-spanking-new dots. He's got one on

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each of three sides and two dots on the

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fourth side because of course an element

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has to get one dot on each side before

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any doubling can take place. So yeah,

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three of his orbitals are short an [Finger points to nitrogen's orbitals]

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electron, but well, his best years

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are still ahead of him. And he's planning to major in

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electron acquisition in college so... After [Elements sitting in a classroom]

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about six hours, once most of the

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excitement is drained from the room, Lithium

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finally has his number called. He is

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suddenly filled with renewed vigor and [Lithium bouncing up and down]

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anticipation until he's given a single

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lonely dot, which represents the lone

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electron in his valence shell. He's happy [Electron in lithium's valence shell]

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to have finally performed this rite of

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passage, but the next couple of years are

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probably going to be tough for him. [Elements chasing lithium in a field]

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Transition metals can be so cruel