A) K, Ca
B) Mn , Fe
C) Co , Ni
D) Cr , Mn
Correct Answer: A
Solution :
Covalent radii decreases on going from left to right in periods. However among the transition elements the size do not changes much because the electrons add to the pneultimate d-subshells i.e. \[(n-1)\,d\text{-}\]subshell.You need to login to perform this action.
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