Transition and Inner Transition Elements — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryTransition and Inner Transition Elements2 Marks
Question
Manganese shows variable oxidation states. Give reasons.
✓
Answer
Manganese $(_{25}Mn)$ has electronic configuration. ${ }_{25} Mn [ Ar ]^{18} 3 d^5 4 s^2$.
Mn has stable half$-$filled $d-$subshell.
Due to a small difference in energy between $3d$ and $4s-$ orbitals, Mn can lose or share electrons from both the orbitals, hence shows variable oxidation states.
Mn shows oxidation states ranging from $+ 2$ to $+ 7.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.