Bohr Diagram and Lewis Dot Structure Practice Sheet #1
Bohr Diagrams: For each element, write the number of protons and neutrons in the nucleus of the atom. Next,
write the number of electrons for each shell in the space in the shell. Then color in the electrons on the shells.
Remember, fill the shell closest to the nucleus first, but never exceed the number each shell can hold!
Lewis Dot Structures: For each element, add valence electrons to the element’s symbol. Remember, the
number of ‘dots’ you place indicate the number of valence electrons the atom has!
EXAMPLE
1
8
___ P
___N
11 P 2
12 N
Sodium
Na
Calcium
P: __ N: __ E: __
___ P
___N
Ca
P: __ N: __ E: __
Helium
He
P: __ N: __ E: __
On your own, complete the Bohr Diagrams and Lewis Dot Structures for the following elements!
Neon
Ne
P: __ N: __ E: __
Nitrogen
P: __ N: __ E: __
N