IIT-JEE 2006 | Coordination Compounds Question 52 | Chemistry

IIT-JEE 2006

MCQ (Single Correct Answer)

-1

The coordination of $$\mathrm{Ni^2+}$$ is 4.

$$\mathrm{NiCl_2+KCN}$$ (excess) $$\to$$ A (cyano complex)

$$\mathrm{NiCl_2+ conc.~HCl}$$ (excess) $$\to$$ B (chloro complex)

The IUPAC names of $$\mathbf{A}$$ and $$\mathbf{B}$$ are

Potassium tetracyanonickelate (II), potassium tetrachloronickelate (II).

Tetracyanopotassiumnickelate (II), teterachloroptassiumnickelate (II).

Tetracyanonickel (II), tetrachloronickel (II).

Potassium tetracyanonickel (II), potassium tetrachloronickel (II).

IIT-JEE 2006

MCQ (Single Correct Answer)

-1

The coordination of $$\mathrm{Ni^2+}$$ is 4.

$$\mathrm{NiCl_2+KCN}$$ (excess) $$\to$$ A (cyano complex)

$$\mathrm{NiCl_2+ conc.~HCl}$$ (excess) $$\to$$ B (chloro complex)

Predict the magnetic nature of $\mathbf{A}$ and $\mathbf{B}$.

Both are diamagnetic.

A is diamagnetic and B is paramagnetic with one unpaired electron.

A is diamagnetic and B is paramagnetic with two unpaired electrons.

Both are paramagnetic.

IIT-JEE 2006

MCQ (Single Correct Answer)

-1

The coordination of $$\mathrm{Ni^2+}$$ is 4.

$$\mathrm{NiCl_2+KCN}$$ (excess) $$\to$$ A (cyano complex)

$$\mathrm{NiCl_2+ conc.~HCl}$$ (excess) $$\to$$ B (chloro complex)

The hybridisation of $A$ and $B$ are :

$d s p^2, s p^3$

$s p a, s p^3$

$d s p^2, d s p$

$s p^3 d^2, d^2 s p^3$

IIT-JEE 2004 Screening

MCQ (Single Correct Answer)

-0.5

The pair of compounds having metals in their highest oxidation state is

MnO₂, FeCl₃

[MnO₄]^-, CrO₂Cl₂

[Fe(CN)₆]^3-, [Co(CN)₃]

[NiCl₄]^2- , [CoCl₄]^-

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