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Rimi Luthra

Asked: 3 years ago2022-11-08T20:57:22+05:30 2022-11-08T20:57:22+05:30In: Class 10

How many vertical columns are there in modern periodic table and what are they called

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Asked: 3 years ago2022-10-31T20:32:19+05:30 2022-10-31T20:32:19+05:30In: Class 10

how many vertical columns are there in modern periodic table what are they

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