Assertion: modern periodic table is known as the long forms of the periodic table.
Reason: modern periodic table consists of eight groups and seven periods.
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Answer:
Explanation:The Modern Periodic Table is called as "long form" of the periodic table,since in comparison to Mendeleev's Periodic table,it is longer and have the capacity to not only accommodate those elements which have been discovered but also which are yet to be discovered.
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Answer:
Assertion is True, Reason is False
Explanation:
Modern periodic table contains 7 periods 17 groups.
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