what do you understand by term periodicity ?are the properties of elements placed in the same group similar?illustrated
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Answer:
The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.
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Answer:
periodicity means repeat after regular intervals.The properties of elements placed in the group is same .
Explanation:
example:take sodium and potassium which are placed in same group.These show same properties.
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