WB JEE 2023 | Coordination Compounds Question 3 | Chemistry

WB JEE 2023

MCQ (Single Correct Answer)

-0.25

Which of the following statements is incorrect?

$${[V{F_6}]^{3 - }}$$ is paramagnetic with 2 unpaired electrons.

$${[CuC{l_4}]^{2 - }}$$ is paramagnetic with 1 unpaired electron.

$${[Co{(N{H_3})_6}]^{3 + }}$$ is diamagnetic

$${[Co{F_6}]^{3 - }}$$ is paramagnetic with 2 unpaired electrons.

WB JEE 2023

MCQ (Single Correct Answer)

-0.25

The calculated spin-only magnetic moment values in BM for $$\mathrm{[FeCl_4]^-}$$ and $$\mathrm{[Fe(CN)_6]^{3-}}$$ are

5.9 BM, 1.732 BM

4.89 BM, 1.732 BM

3.87 BM, 1.732 BM

1.732 BM, 2.82 BM

WB JEE 2023

MCQ (Single Correct Answer)

-0.25

The correct statement about the magnetic properties of $${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$$ and $${\left[ {Fe{F_6}} \right]^{3 - }}$$ is

Both are paramagnetic

Both are diamagnetic

$${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$$ is diamagnetic, $${\left[ {Fe{F_6}} \right]^{3 - }}$$ is paramagnetic

$${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$$ is paramagnetic, $${\left[ {Fe{F_6}} \right]^{3 - }}$$ is diamagnetic

WB JEE 2023

MCQ (Single Correct Answer)

-0.5

Nickel combines with a uninegative monodentate ligand (X$$^-$$) to form a paramagnetic complex [NiX$$_4$$]$$^{2-}$$. The hybridisation involved and number of unpaired electrons present in the complex are respectively

sp$$^3$$, two

dsp$$^2$$, zero

dsp$$^2$$, one

sp$$^3$$, one

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