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 what is periodic table

The periodic table is nothing but arrangement of all the elements into specified periods (rows) and groups (columns) in order of their increasing atomic numbers. It is also known as the Modern Periodic Table or Long Form of the Periodic Table. The table consists of 7 periods and 18 groups.

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The periodic table is a table of the chemical elements, showing the symbols for the elements, their full names, their atomic numbers and their mass number. It organizes them into groups and periods (columns and rows) based on their structure and properties. It is called "the periodic table" because the horizontal rows are named "periods." 

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A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure...

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