Question

Match the complex (in Column I) with the unpaired electron of the central ion (in Column II).

Answer 1

(A) The complex $\left[Fe\right(H_{2}O{)}_6{]}^{2+}$ contains four unpaired electrons.
(B) The complex $\left[Fe\right(H_{2}O{)}_6{]}^{3+}$ contains five unpaired electrons.
(C) The complex $\left[Fe\right(CN{)}_6{]}^{4-}$ contains no unpaired electrons.
(D) The complex $\left[Fe\right(CN{)}_6{]}^{3-}$ contains two unpaired electrons.
(E) The complex $\left[Ni\right(H_{2}O{)}_4{]}^{2+}$ contains one unpaired electron.