Question:

Low spin complex of $d^6$-cation in an octahedral field will have the following energy :

Updated On: Apr 18, 2024
  • $\frac{-12}{5} \Delta_0 + 3P$
  • $\frac{-2}{5} \Delta_0 + 2P$
  • $\frac{-2}{5} \Delta_0 + P$
  • $\frac{-12}{5} \Delta_0 + P $
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The Correct Option is A

Solution and Explanation

Low spin complex of $d ^{6}$ cation having $\Delta_{0}>$ P.E

Configuration is $t _{2} g ^{6} eg ^{0}$ and 3 electron are paired in $t _{2_{ g }}$ orbital

$=\frac{-2}{5} \Delta_{0} \times 6+3 P$
$=\frac{-12}{5} \Delta_{0}+3 P$
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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.