1
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Which of the following statements is incorrect?

A
$${[V{F_6}]^{3 - }}$$ is paramagnetic with 2 unpaired electrons.
B
$${[CuC{l_4}]^{2 - }}$$ is paramagnetic with 1 unpaired electron.
C
$${[Co{(N{H_3})_6}]^{3 + }}$$ is diamagnetic
D
$${[Co{F_6}]^{3 - }}$$ is paramagnetic with 2 unpaired electrons.
2
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

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

A
5.9 BM, 1.732 BM
B
4.89 BM, 1.732 BM
C
3.87 BM, 1.732 BM
D
1.732 BM, 2.82 BM
3
WB JEE 2023
MCQ (Single Correct Answer)
+1
-0.25
Change Language

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

A
Both are paramagnetic
B
Both are diamagnetic
C
$${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$$ is diamagnetic, $${\left[ {Fe{F_6}} \right]^{3 - }}$$ is paramagnetic
D
$${\left[ {Fe{{(CN)}_6}} \right]^{3 - }}$$ is paramagnetic, $${\left[ {Fe{F_6}} \right]^{3 - }}$$ is diamagnetic
4
WB JEE 2023
MCQ (Single Correct Answer)
+2
-0.5
Change Language

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

A
sp$$^3$$, two
B
dsp$$^2$$, zero
C
dsp$$^2$$, one
D
sp$$^3$$, one
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