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Atomic Theories - Review Exercises

Exercises

Use your class notes and your book to complete the following exercises.

  1. Use the Periodic table to answer the following questions:

A)    For the Atoms Magnesium and Fluorine complete the following table

Atom

# of Protons

# of Electrons

# of Neutrons

Atomic Mass

Atomic Number

Chemical Symbol

Magnesium

 

 

 

 

 

 

Fluorine

 

 

 

 

 

 

B)     Draw the Bohr-Rutherford diagram for each atom 
 

Magnesium

Fluorine

 

 

 

 

 

 

 

 

 

 

 

  C)    Complete the following table to illustrate what happens when the two atoms combine to form a molecule

Possible charge on the atom during bonding

Possible formula of the compound formed

Lewis Dot Diagram for Each Atom

Possible type of compound (ionic or covalent .. explain)

Magnesium

 

 

 

 

 

 

Fluorine

 

 

 

 

 

  1. Complete the following table to explain the MAIN differences between atomic theories and their importance in the development of the Model of the Atom

Scientist & approximate Date

Name of Model or Sketch

Importance or
Improvement on previous model

Shortcomings - Problems
or why was it changed

Democritus 
 c.300 BC

 

 

 

 

 

 

 

 

Dalton
  c.1800

 

 

 

 

 

 

 

 

 

J.J. Thomson
 c.1850

 

 

 

 

 

 

 

 

 

Rutherford
c. 1905

 

 

 

 

 

 

 

 

 

 

Bohr-Rutherford
c. 1920