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93. Write the number of vertical columns in the modem periodic table. What are these columns called? [Delhi 2014]

Harshit Singh , 3 Years ago
Grade 12th pass
anser 1 Answers
Pawan Prajapati

Last Activity: 3 Years ago

Answer: Explanation: There are 18 vertical columns in the modem periodic table. These vertical columns are called groups

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