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(What elements are included in this group of elements?)
(What are the general appearances of the elements of this group? What are the trends in atomic weight, melting point, boiling point, density?)
(How do they react with halogens? React with water? What are the general trends in electronegativity and ionization potential?)
(Where can you find such element(s) in every day life? What experiment(s) can be conducted in order to check its identity?)
(Did you find any web pages that can be helpful to others?)