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The modern periodic table organizes elements in such a way that information about the elements and their properties are easier to understand and remember. For example, the vertical column of the periodic table is called group, elements in the same group share common properties. Classify the elements from the box below according to the group where they belong to complete the list of representative elements. Use the chemical symbol of the element in answéring. Write your answer on a separate sheet of paper.
Lead
Boron
Argon
Radon
Sodium
Helium
Oxygen
Chlorine
Nitrogen
Hydrogen
Barium
Aluminum
Pøtassium
Magnesium
Phosphorous
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Answer:
The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.
Explanation:
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