Period (periodic table) - Wikipedia
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Give the number of periods and groups in Modern Periodic Table.
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What is the meaning of period and group in periodic table? How many groups and periods in extended modern periodic table? - Quora
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Elements of periodic table are arranged into groups/periods
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groups & periods- A group is a column on the periodic table. Elements in the same group have similar chemical p… | Periodic table, Electron configuration, Noble gas
