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Transition and Inner Transition Elements — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryTransition and Inner Transition Elements2 Marks
Question
Write observed electronic configuration of elements from first transition series having half filled $d-$orbitals.
✓

Answer

Elements Symbols Atomic
Number		 Expected Electronic
Configuration		 Observed Electronic
Configuration
Chromium $Cr$ $24$ $[Ar] 3d^4 4s^2$ $[Ar] 3d^5 4s^1$
Manganese $Mn$ $25$ $[Ar] 3d^5 4s^2$ $[Ar] 3d^5 4s^2$

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