WB JEE 2023 | Coordination Compounds Question 5 | Chemistry

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

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

Sodium nitroprusside is :

$$N{a_4}[Fe{(CN)_5}N{O_2}]$$

$$N{a_2}[Fe{(CN)_5}NO]$$

$$N{a_3}[Fe{(CN)_5}NO]$$

$$N{a_4}[Fe{(CN)_5}N{O_3}]$$

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

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