Give the correct of initials T or F for following statements. Use T if statements is true and F if it is false.
(I) Co(III) is stabilised in presence of weak field ligands, while Co(II) is stabilised in presence of strong field ligand.
((II) Four coordinated complexes of Pd(II) and Pt(II) are diamagnetic and square planar.
(III) `[Ni(CN)_(4)]^(4-)` ion and `[Ni(CO)_(4)]` are diamagnetic tetrahedral and square planar respectively.
(IV) `Ni^(2+)` ion does not form inner orbital octahedral complexes

Options

A. TFTF
B. TTTF
C. TTFT
D. FTFT

Answer

D

Explanation

(I) Both `CO^(2+) and Co^(3+)`, are stabilized in the presence of strong field ligands due to higher CFSE values.
(II) Because of higher `Z_(e f f)` value on the valence shell of `Pd^(2+) and Pt^(2+)` cations they, always from inner orbital complex.
(III) `[Ni(CO)_(4)],sp^(3)`, tetrahedral, `mu=0` BM
`[Ni(CN)_(4)]^(4-),sp^(3)`, tetrahedral, `mu=0` BM
(IV) `Ni^(2+)` in the octahedral field.

`implies` i.e., electronic distribution remains unaffected.