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Question: Answered & Verified by Expert
Which pair of elements with the given atomic numbers is expected to have similar properties?
ChemistryClassification of Elements and Periodicity in PropertiesJEE MainJEE Main 2012 (19 May Online)
Options:
  • A
    40,72
  • B
    20,36
  • C
    10,28
  • D
    11,12
Solution:
2279 Upvotes Verified Answer
The correct answer is:
40,72
$\mathrm{Zr}(40), \mathrm{Hf}(72)$ have similar properties as they belong to same group and have same valence shell electronic configuration.

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