difference between mandelevs periodic table and modern periodic table.
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These defects are rectified by the modern periodic table.
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Complete step by step solution:
Mendeleev's periodic table Modern periodic table
This periodic table based on atomic mass This periodic table is based on atomic numbers.
There are a total of 7 groups and 6 periods There are a total of 18 groups and 7 periods.
Explanation:
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