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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

There are two elements namely $Cr$ and $Mn$ which have half-filled d-orbitals.
${ }_{24} CrIs ^2 2 s^2 2 p^6 3 s^2 3 p^6 3 d^5 4 s^1$
${ }_{25} Mnls ^2 2 s^2 2 p^6 3 s^2 3 p^6 3 d^5 4 s^2$

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