Question
Which of the following elements is a member of the
actinoid series?Solution
The actinide series is a group of 15 elements on the periodic table with atomic numbers 89ā103. The elements in this series are radioactive and have a wide range of oxidation states.Ā Thorium is a radioactive actinide metal with the atomic number 90.
Find the similarity among the following:
Makar Sankranti, Pongal, Lohri, Baisakhi
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