define modern perodic table.
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The modern periodic table is used to organize all the known elements. Elements are arranged in the table by increasing atomic number. In the modern periodic table, each element is represented by its chemical symbol. ... Rows of the periodic table are called periods.
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in modern perodic table their is no space between elements
2. it has 18 group
3. it tells the position of hydrogen
4. it's arrange the elements on their atomic mass
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