Solved UPSC CDS/OTA Question
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Q · Classification of Elements Medium · 45s
Main-group (representative) elements include the:
TopicClassification of Elements
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Groups 1-2 and 13-18 comprise the representative elements.
Final Answer: Option A - s- and p-blocks