Valence Electrons

Valence Electrons =

(*LARGEST n values*)

Let’s start with these elements as Ex: Li, Na, K

Do these after the next slide Ex: O, S, Se

Do these after the next slide Ex: F, Cl, Br

Electrons Continued…

₃Li 1s²

₁₁Na 1s²

₁₉K 1s²

Copy and Paste as needed.

All these elements would have ________________________________________________________________________.

Electrons Continued… (Complete these like the previous examples.)

₈O 1s²

₁₆S 1s²

₃₄Se 1s²

Copy and Paste as needed.

All these elements would have ________________________________________________________________________.

Electrons Continued… (Complete these like the previous examples.)

₉F 1s²

₁₇Cl 1s²

₃₅Br 1s²

All these elements would have ________________________________________________________________________.

Copy and Paste as needed.

Lewis Dot Structures =

1) Chemical symbol surrounded by its _________________.

Ex: Li Na K

2) 2 electrons per side (top, bottom, left, right) Complete these examples below:

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Copy and Paste as needed.

Ex: Be B C N

O F Ne

Octet Rule =

Li

Lose 1 electron

_____________________________________________.

Li

+1

Ion!

O

Gain 2 electrons

__________________________________________.

O

-2

Ion!

Ion =

2 Types:

1) __________ = positively charged ion.

2) __________ = negatively charged ion.