Question

The complex ion which has no d electrons in the central metal atom is (At No. Cr = 24, Mn = 25, Fe = 26 , Co = 27) :




(1)

[MnO4]–



(2)

[Co(NH3)6]3+



(3)

[Fe(CN)6]3–



(4)

[Cr(H2O)6]3+

Answer 1

(Mno4)- is the complexion