Name ______________________________ Class ___________________ Date __________________
Quick Lab
DATASHEET
Electron Levels
MATERIALS
For each group
• marshmallows (38)
PROCEDURE
1. Make a table that has 10 columns and 4 rows. Label the first cell “Energy
level.” Label the remaining cells in the first row “s” (1 cell), ”p” (3 cells), and
“d” (5 cells). Label the remaining cells in the first column “1,” “2,” and “3.”
2. For each energy level, place an X in cells that correspond to orbitals that are
not found in that level.
3. Place marshmallows in empty cells to represent electrons. Each “orbital” can
hold two “electrons.”
4. On the back of this page, draw Bohr models of atoms whose atomic numbers
are 3, 5, 10, and 20. For each model, fill in the cells with the correct number of
marshmallows (in order) to see how the electrons are located in the energy
levels.
Energy
Level
1
s
p
p
p
d
d
d
d
d
2
3
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science Spectrum
37
Atoms