Solved UPSC CDS/OTA Question
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Q · Classification of Elements Medium · 45s
The inner-transition elements are:
TopicClassification of Elements
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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f-block series (4f & 5f) are inner-transition metals.
Final Answer: Option A - Lanthanides and actinides