In chromyl chloride, the number of d-electrons present on chromium is same as in (Given at no. of Ti : 22 , V : 23 , Cr : 24 , Mn : 25 , Fe : 26 )

Step-by-step solution

In chromyl chloride ( CrO 2 Cl 2 ), the oxidation state of chromium ( Cr ) is + 6 . So, Cr   ( VI )   =   [ Ar ] 18   3 d 0 For the given elements the configuration is, Mn ( VII )   =   [ Ar ] 18   3 d 0 Fe ( III )   =   [ Ar ] 18   3 d 5 Ti ( III )   =   [ Ar ] 18   3 d 1 V ( IV )   =   [ Ar ] 18   3 d 1 So among the given options Mn ( VII ) and Cr   ( VI ) will have same number of d-electrons.