Why do elements placed in the same group of the periodic
table have similar chemical properties?
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Explanation:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
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Answer:
The elements of same group have similar chemical properties because they have same number of valence electrons.
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