Name: _______________________________________________ Date: ________________ Period: ______
Atoms and Molecules Worksheet
Using the Periodic Table located inside your text book, answer the following questions.
Analyzing Data: The information below is from part of the Periodic Table of Elements. Use this information to
answer the questions that follow.
1) How many protons, neutrons, and electrons are in each of the following atoms?
Lithium (Li)
Magnesium (Mg)
Carbon (C)
Oxygen (O)
Chlorine (Cl)
p = __________
p = __________
p = __________
p = __________
p = ______
n = __________
n = __________
n = __________
n = __________
n = ______
e = __________
e = __________
e = __________
e = __________
e = ______
2) Fill in the number of electrons in the correct energy levels below.
Number of Fluorine (F) electrons: __________
Number of Neon (Ne) electrons: ___________
Is Fluorine Stable? ____________
Is Neon Stable? ____________
Explain your answer: _______________________
Explain your answer: _____________________
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3) Fill in the chart below. If the atom does not usually ionize, fill in the blank with an X.
ELEMENT
Sodium
ATOMIC
MASS
NUMBER OF
NUMBER OF
NUMBER OF
NUMBER
NUMBER
PROTONS
NEUTRONS
ELECTRONS
11
23
20
20
Calcium
Oxygen
8
Chlorine
8
35
Carbon
6
12
Neon
10
20
18
4) Ionic Bond Drawing: Fill in the two tables based on the number of electrons before and after bonding.
Drawing Directions
a. Add the correct number of
electrons to each atom.
b. Using an arrow, show the
electrons that will be transferred.
Before bonding, is lithium and fluorine stable? Explain your answer.
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After bonding, is lithium and fluorine stable? Explain your answer.
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