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Question: Answered & Verified by Expert
The largest oxidation number exhibited by an element depends on its outer electronic configuration. With which of the following outer electronic configurations the element will exhibit largest oxidation number ?
ChemistryRedox Reactions
Options:
  • A
    $3 d^1 ~4 s^2$
  • B
    $3 d^2 ~4 s^2$
  • C
    $3 d^5 ~4 s^1$
  • D
    $3 d^5 ~4 s^2$
Solution:
1105 Upvotes Verified Answer
The correct answer is:
$3 d^5 ~4 s^2$
Highest oxidation number of any transition element is the sum of $(n-1) d$-electrons and $n s$ electrons. Hence, large the number of electrons in the $3 d$-orbitals, higher is the maximum oxidation number.

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