Solved UPSC CDS/OTA Question
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Q · Classification of Elements Easy · 45s
Elements in groups 1 and 2 are classified as:
TopicClassification of Elements
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
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Their valence electrons occupy s-orbitals, so they form the s-block.
Final Answer: Option B - s-block