WB JEE 2022 | Coordination Compounds Question 7 | Chemistry

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WB JEE 2022

MCQ (Single Correct Answer)

-0.25

Choose the correct statement for the [Ni(CN)₄]^2$$-$$ complex ion (Atomic no. of Ni = 28)

The complex is square planar and paramagnetic.

The complex is tetrahedral and diamagnetic.

The complex is square planar and diamagnetic.

The complex is tetrahedral and paramagnetic.

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

A solution is made by a concentrated solution of Co(NO₃)₂ with a concentrated solution of NaNO₂ is 50% acetic acid. A solution of a salt containing metal M is added to the mixture, when a yellow precipitate is formed. Metal 'M' is

magnesium

sodium

potassium

zinc

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

Indicate the number of unpaired electrons in K₃[Fe(CN)₆] and K₄[Fe(CN)₆].

$${K_3}[Fe{(CN)_6}]$$	$${K_4}[Fe{(CN)_6}]$$
1	0

$${K_3}[Fe{(CN)_6}]$$	$${K_4}[Fe{(CN)_6}]$$
5	6

$${K_3}[Fe{(CN)_6}]$$	$${K_4}[Fe{(CN)_6}]$$
6	5

$${K_3}[Fe{(CN)_6}]$$	$${K_4}[Fe{(CN)_6}]$$
0	1

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

Which of the following compounds have magnetic moment identical with [Cr(H₂O)₆]³⁺ ?

[Cu(H₂O)₆]²⁺

[Mn(H₂O)₆]³⁺

[Fe(H₂O)₆]³⁺

[Mn(H₂O)₆]⁴⁺

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