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Coordination Compounds question

2018 · Q88
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Coordination Compounds question

2018 · Q88

NEETChemistryCoordination CompoundsMCQ+4 / −1
The geometry and magnetic behaviour of the complex [Ni(CO)4] are
  1. A
    square planar geometry and diamagnetic
  2. B
    tetrahedral geometry and diamagnetic
  3. C
    square planar geometry and paramagnetic
  4. D
    tetrahedral geometry and paramagnetic.
View written solutionFree

Correct answer: B

Ni(28) : [Ar]3d84s2

CO is a strong field ligand, so unpaired electrons get paired. Hence, configuration would be:

NEET 2018 Chemistry - Coordination Compounds Question 27 English Explanation

For, four ‘CO’-ligands hybridisation would be sp3 and thus the complex would be diamagnetic and of tetrahedral geometry.

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