MCQ
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?
- A3d14s 2
- B
- C3d54s1
- D3d54s2
✓
Answer
- 3d54s2
Explanation:
Highest O.N. of any transition element = (n – 1)d electrons +ns electrons. Therefore, larger the number of electrons in the 3d orbitals, higher is the maximum O.N.
- 3d14s2 = 3
- 3d2 4s2 = 3 + 2 = 5
- 3d54s1 = 5 + 1 = 6
- 3d54s2 = 5 + 2 = 7
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