6.1 Atomic Structure & Electron Energy Levels
p. 143 in textbook
Name ________________________
Period ____ Date _______________
Choose three different colored pencils
 Protons =
 Neutrons =
 Electrons =
The nucleus is made of protons & neutrons.
Draw the correct number of protons and neutrons in the middle of the center circle.
Electrons orbit the nucleus in the electron cloud.
We show this electron cloud with a model that has separate energy levels.
Fill in the number of electrons in the right places:
 Start with the first energy level (inside circle).
 When the first energy level is filled, continue with the second energy level.
 If you fill the second energy level, move up to the third energy level.
 The number of empty spaces in the final energy level you were filling tells you how many
single bonds this element can form when making covalent bonds.
Hydrogen ~ # of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
Carbon ~
The first energy level can hold __________ electrons.
The second energy level can hold ______________ electrons.
# of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
Nitrogen ~ # of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
Oxygen ~
Sodium ~
Chlorine ~ # of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
# of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
# of Protons =
# of Neutrons =
# of Electrons =
# empty spaces in last level =
The first energy level can hold __________ electrons.
The second energy level can hold ______________ electrons.
The third energy level can hold ______________ electrons.
There are even more energy levels…
The fourth & fifth energy level can each hold 18 electrons.
The sixth energy level can hold 32 electrons… but you can stress over this in chemistry class!