AP EAPCET 23-Aug-2021 Shift 1 Paper

[Cr(CN)6]3−
Oxidation state of Cr:x+(−1)6=−3
x=+3
Cr=[Ar]4s13d5
Cr3+=[Ar]4s03d3Since, CN is a strong field ligand, it will cause pairing of electrons in Cr3+, So, there is one unpaired electron in 3d-orbital of Cr3+ which makes the compound [Cr(CN)6]3− paramagnetic.