How many vertical columns are there in mendeleevs peridic table?
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Mendeleev arranged all 63 elements; which were discovered till his time; in the order of their increasing relative atomic masses in a tabular form. It is known as Mendeleev's Periodic Table. He divided the table in eight columns and seven rows. The columns are known as groups and rows are known as periods.
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Mendeleev periodic table has 8 vertical columns.
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