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Chemistry · Classification of Elements and Periodicity in Properties
हिन्दीAccording to the IUPAC recommendations, the groups in the modern periodic table are numbered from 1 to 18, replacing the older notation. What was the older notation corresponding to Group 17?
Correct answer · Option 1
VII A
Explanation
Group 17 corresponds to the older notation VII A, while Group 18 corresponds to zero or VIII depending on historical classification.
