Chemistry · Transition Elements: General introduction, electronic configuration, occurrence and characteristics
Electronic configuration of a transition element in +3 oxidation State is 3 d^{5
Electronic configuration of a transition element \( X \) in +3 oxidation State is \( [A r] 3 d^{5} . \) What is its atomic number?
- A. 25
- B. 26
- C. 27
- D. 24
Step-by-step solution
The +3 oxidation state has configuration [Ar] 3d5, meaning 18 (from Ar) + 5 = 23 electrons. The neutral atom has 3 more electrons, so atomic number = 23 + 3 = 26.
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