Question:
Which of the following is paramagnetic ?
Which of the following is paramagnetic ?
Updated On: Jul 28, 2022
- $[Fe(CN)_6]^{4-} $
- $[Ni(CO)_4] $
- $[Ni(CN)_4]^{2-} $
- $[CoF_6]^{3-}$
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The Correct Option is D
Solution and Explanation
In $[Fe(CN)_6]^{4-} \, , Fe^{2+}$ has configuration of $[Ar]^{18}\, 3d^6$. After pairing up of six $3d$-electrons in three $d$-orbitals, $d^2sp^3$-hybridisation gives 6 empty hybridised orbitals for accommodating six pairs of electrons from six $CN^-$ ions. Thus no unpaired electron is present and hence diamagneti
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.