The d-block elements occupy groups:
A3 to 12
B13 to 18
C1 and 2
D4 and 5
Answer & Solution
Correct answer: A. 3 to 12
1. The d-block sits in the centre of the periodic table.
2. It lies between the s-block and the p-block.
3. It runs from group 3 through group 12.
_Source: NCERT Class 11 Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._
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