Bohr Diagram and Lewis Dot Structure Practice Sheet #2
(Ions and Isotopes)
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 carbon and phosphorus, 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
8
11 P 2
12 N
Na 1+
___ P
___N
___ P
___N
Ca2+
P: __ N: __ E: __
Carbon-14
P: __ N: __ E: __
C
P: __ N: __ E: __
On your own, complete the Bohr Diagrams and Lewis Dot Structures for the following elements!
F 1P: __ N: __ E: __
Phosphorus-29
P: __ N: __ E: __
P