Which of the following is correctly matched ?
Column I Column II Column III

[C r {(C O)}_{6}]

Paramagnetic Octahedral,

s p^{3} d^{2}

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[F e {(C O)}_{5}]

Paramagnetic Trigonal bipyramid,

s p^{3} d

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[C o {(C O)}_{4}^{-}]

diamagnetic tetrahedral,

s p^{3}

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[N i {(C O)}_{4}]

diamagnetic square planar,

d s p^{2}

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Solution

The correct option is C $[C o {(C O)}_{4}^{-}]$ diamagnetic tetrahedral, $s p^{3}$
$[C o {(C O)}_{4}^{-}]$
$C o^{-}, d^{10}, s p^{3}$ configuration with zero unpaired electron so diamagnetic & tetrahedral.
$[C r {(C O)}_{6}]$
$C r, d^{6}, d^{2} s p^{3}$ hybridization.
$[F e {(C O)}_{5}]$
$F e, d^{8}$ configuration.
$[N i {(C O)}_{4}]$
$N i, d^{10} s p^{3}$ hybridization

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Similar questions

\begin{matrix} Column - I & Column - II i . & [N i (C O)_{4}] & Planar octahedral, diamagnetic i i . & [F e (N O) (H_{2} O)_{5}]^{2 +} & Planar, paramagnetic i i i . & [C o (N O_{2})_{6}]^{3 -} & Octahedral, diamagnetic i v . & [C u (N H_{3})_{4}]^{2 +} & Planar octahedral, paramagnetic Octahedral, paramagnetic \end{matrix}

Q. Match Column I with Column II.

\begin{matrix} Column - I & Column - II (Complex ion) & (CFSE and hybridisation) a . {[C r (N H_{3})_{6}]}_{3}^{3 +} & (P) 0.0 Δ_{0}, s p^{3} d^{2} - hybridisation b . {[C u (N H_{3})_{6}]}_{3}^{2 +} & (Q) - 0.6 Δ_{0}, s p^{3} d^{2} - hybridisation c . {[F e (H_{2} O)_{6}]}_{2}^{3 +} & (R) - 1.2 Δ_{0}, d^{2} s p^{3} - hybridisation d . {[I r F_{6}]}_{6}^{3 -} & (S) Diamagnetic (T) Paramagnetic \end{matrix}

[N i C l_{4}]

is paramagnetic while

[N i C O_{4}]

is diamagnetic though both are tetrahedral. Explain.

Match the column:
$\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & [A g (N H_{3})_{2}]^{+} & (p) & O c t a h e d r a l (b) & [C u (N H_{3})_{4}]^{2 +} & (q) & T e t r a h e d r a l (c) & [C r (H_{2} O)_{6}]^{2 +} & (r) & T r i g o n a l b i p y r a m i d a l (d) & [F e (C O)_{5}] & (s) & S q u a r e p l a n a r (t) & L i n e a r \end{matrix}$

Q. Match the column :

Column-I	Column-II
(a) $[A g (N H_{3})_{2}]^{+}$	(p) Octahedral
(b) $[C u (N H_{3})_{4}]^{2 +}$	(q) Tetrahedral
(c) $[C r (H_{2} O)_{6}]^{2 +}$	(r) Trigonal bipyramidal
(d) $[F e (C O)_{5}]$	(s) Square planar
	(t) Linear

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Which of the following is correctly matched ?Column I Column II Column III

The correct option is C [Co(CO)−4] diamagnetic tetrahedral, sp3[Co(CO)−4]Co−,d10,sp3 configuration with zero unpaired electron so diamagnetic & tetrahedral.[Cr(CO)6]Cr,d6,d2sp3 hybridization.[Fe(CO)5]Fe,d8 configuration.[Ni(CO)4]Ni,d10sp3 hybridization

Which of the following is correctly matched ?
Column I Column II Column III