Question:
$[ CoF_6]^{3-}$ is paramagnetic.
$Co^{3+}$ has $3d^6$ outer electronic configuration. The unpaired electrons do not pair up because of weak field provided by $F^-$ .
$[ CoF_6]^{3-}$ is paramagnetic.
$Co^{3+}$ has $3d^6$ outer electronic configuration. The unpaired electrons do not pair up because of weak field provided by $F^-$ .
Updated On: Jun 20, 2022
- Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- Both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
- Assertion is true but Reason is false.
- Both Assertion and Reasonl are false.
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The Correct Option is A
Solution and Explanation
In complex$ [CoF_6]^{3-}$
Oxidation number of Co= +3
Electronic configuration of
$Co^{3+} = 1s^2, 2s^2, 2p^6, 3s^2 3p^6, 3d^6$
In $Co^{3+}$
In $Co^{3+}$ number of unpaired electrons is four, and $F^-$ is the ligand of weak field. Hence, it does not paired up electrons of d-orbital.
So, In$[CoF_6)]^{3-}$
So, $[ CoF_6 ]^{3-}$ is paramagnetic.
$Co^{3+}$ has $3d^6$ outer electronic configuration, but four unpaired electrons do not pair up because of weak field provided by $F^-.$
Oxidation number of Co= +3
Electronic configuration of
$Co^{3+} = 1s^2, 2s^2, 2p^6, 3s^2 3p^6, 3d^6$
In $Co^{3+}$
In $Co^{3+}$ number of unpaired electrons is four, and $F^-$ is the ligand of weak field. Hence, it does not paired up electrons of d-orbital.
So, In$[CoF_6)]^{3-}$
So, $[ CoF_6 ]^{3-}$ is paramagnetic.
$Co^{3+}$ has $3d^6$ outer electronic configuration, but four unpaired electrons do not pair up because of weak field provided by $F^-.$
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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.