Atomic structure

Basic Atomic Structure Worksheet

1. The 3 particles of the atom are:

a. ________________________
b. ________________________
c. ________________________


2. Their respective charges are:

a. ________________________

b. ________________________

c. ________________________


3. The atomic number tells you the number of ___________________________ in one atom of an element. It also tells you the number of __________________________ in a neutral atom of that element. The atomic number gives the “identity” of an element as well as its location on the periodic table. No two different elements will have the ____________________ atomic number.

4. The _______________________ of an element is the total number of protons and neutrons in the ___________________ of the atom.

5. The atomic mass is used to calculate the number of ______________________ in one atom of an element. In order to calculate the number of neutrons you must subtract the __________________ from the___________.


6. Draw a Bohr model and a Lewis structure for the following elements:

a. Fluorine 
b. Sulfur
c. Helium


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J.J. Thomson

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