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Chemistry
Which of the following pairs are chemically dissimilar?
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Q. Which of the following pairs are chemically dissimilar?
Classification of Elements and Periodicity in Properties
A
$Na$ and $K$
B
$Ba$ and $Sr$
C
$Zr$ and $Hf$
D
$Ca$ and $Zn$
Solution:
$Ca$ and $Zn$ have different outer electronic configuration and belong to $s$ - and $d$ -block respectively.