The experimentally observed magnetic moment values, which match well with the spin-only values for the pair of aqueous ions is

Q. The experimentally observed magnetic moment values, which match well with the spin-only values for the pair of aqueous ions is

(Atomic number: Cr = 24, Co = 27, Gd = 64, Tb = 65, Dy = 66 and Lu = 71)

(A) Cr(III) and Gd(III)

(B) Co(II) and Gd (III)

(C) Cr(III) and Dy(III)

(D) Lu(III) and Tb(III)

Ans: Cr(III) and Gd(III)