25. Which of the following statements is correct?
(A)The low-spin Ru(NH3)6
2+ ion has 4 unpaired electrons. (B)The Ni(H2O)62+ ion has 0 unpaired electrons.
(C)The diamagnetic PdCl42- ion has a tetrahedral d8 structure.
(D) CN-
is a weaker field ligand than SCN-1 because the Fe(CN)63- ion is paramagnetic with one unpaired electron and the
Fe(SCN)63- ion has five unpaired electrons.
(E)The F- ligand in the CrF64- ion produces a weak field because the ion is known to have four unpaired electrons.