How many unpaired electrons are present in [Mn(H₂O)6]2+? (Mn atomic number = 25)
Mn₂+ (d5) in [Mn(H₂O)6]2+ with weak field H₂O is high spin: t2g3 eg2, 5 unpaired electrons.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Crystal Field Theory - CFT and Crystal Field Splitting and CFSE