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Atomic Structure Practice

Name: ___________________________________ Period: _____ Date: _____________

Atomic Structure Practice

Part I: Reading the Periodic Table

The following table includes information about the name, symbol, atomic number, atomic mass,

and numbers of protons, neutrons, and electrons for several elements. Use your periodic table to

fill in all of the blanks.

Atomic

Element

Symbol

Protons

Neutrons

Electrons

Number

Mass

Lithium

6.941

Hydrogen

30.974

Tungsten

126.90

Part II: Electron Configuration

Determine how many electrons are contained in the outer orbital of each atom below. (Use your

periodic table to determine the total number of electrons)

Phosphorus

Hydrogen

Lithium

Chlorine

Helium

Magnesium

Oxygen

Boron

Two of the above elements have stable electron configurations. Circle them.

Part III: Ions

Use your periodic table to determine the number of electrons and protons found in each of the

following ions.

Protons

Electrons

Protons

Electrons

Atomic Structure Practice