what is modern periodic tables ?
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The periodic table, or periodic table of elements, is a tabular arrangement of the chemical elements, arranged by atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends
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The periodic table is an arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations and recurring chemical properties.
- Elements are arranged in the increasing order of atomic numbers.
- Elements in the modern periodic table are arranged in 7 periods and 18 groups.
- Horizontal rows are called periods and vertical columns are called groups.
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