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The d & f Block Elements — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
Question
Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d5. What is its atomic number?
  1. 25
  2. 26
  3. 27
  4. 24
✓

Answer

  1. 26

Explanation:

Electronic configuration of element X = [Ar] 3d5+ oxidation state = 18 + 5 + 3 = 26.

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