1.

Actinoid and Lanthanoid are placed respectively in ...........(A) third group and 6th and 7th period of periodic table (B) fourth group and 7th and 6th period of periodic table (C) third group and 7th and 6th period of periodic table (D) fourth and third group of the periodic table

Answer»

Correct option: (C) third group and 7th and 6th period of periodic table



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