Name: __________________________________________________________ Date: _____________
Review – Bohr & Lewis Dot Diagrams
1. Complete the following chart below. Remember that the Bohr diagram shows the # of protons in the
middle and includes all the energy levels, while the Lewis dot structure only has the symbol of the element
surrounded by the correct number of valence electrons. The group & period numbers are found by looking
on the periodic table.
Element
Calcium
Carbon
Oxygen
Fluorine
Neon
Sodium
Aluminum
Bohr Diagram
Period
Number (PT)
Group Number
(PT)
# of Valance
Electrons
Lewis Dot Structure
Making Ions – Remember that atoms want a filled outer orbital to be in the most stable state. Complete the
chart below showing what happens for each of the atoms to become an ion.
Element
Na
Be
Cl
S
Al
Ne
K
N
O
Ca
P
B
Mg
Lewis Dot
# of Valance e-
Gain/Lose ___ e-
Valance Charge
1
L1
+1
Lewis Dot Structures of Molecular Compounds
Complete the table below.
1. Draw the Lewis Structure: PF3
2. Draw the Lewis Structure for CH3NO2
Total Valence Electrons: _________
Name of Compound:
Total Valence Electrons: _________
5. Draw the Lewis Structure for H2S2
6. Draw the Lewis Structure for C2H5OH
Total Valence Electrons: _________
Total Valence Electrons: _________
Name of Compound:
7. Draw the Lewis Structure for N2
8. Draw the Lewis Structure for CO
Hint: In this one neither the C nor the O form the
number of bonds they typically do, but remember to
count the valence electrons first and find a way to have
8 electrons around each.
Total Valence Electrons: _________
Total Valence Electrons: _________
Name of Compound:
Periodic Trends Review
1. Look at Period 2 of your periodic table. Of the atoms B, C, N, O, or F, which one has the
LARGEST atomic radius? Explain why.
2. Look at Group 16 of your periodic table. Of the atoms O, S, and Se, which one has the
SMALLEST atomic radius? Explain why.
3. Look at Period 3 of your periodic table. Of the atoms P, S, Cl, or Ar, which one has the
LARGEST first ionization energy? Explain why.
4. Look at Group 1 of your periodic table. Of the atoms Li, Na, or K, which one has the
SMALLEST first ionization energy? Explain why.
General Review - Naming
Write Formula Unit For the Below Ionic Compounds
Name
Cation (+)
Anion (-)
Formula
1
Sodium Chloride
Na1+
Cl1-
NaCl
2
Aluminum Chloride
3
Magnesium Phosphide
4
Lead (II) Oxide
5
Silver Fluoride
6
Cobalt (II) Oxide
7
Iron (III) Sulfide
8
Calcium Sulfate
9
Sodium Carbonate
10
Beryllium Iodide
11
Titanium (IV) Sulfate
12
Aluminum Phosphate
13
Manganese (III) Nitride
14
Zinc Sulfide
15
Lithium Chlorate
16
Calcium Oxalate