Choose the correct statement(s) among the following:
- $\left[ FeCl _{4}\right]^{-}$has tetrahedral geometry
- $\left[ Co ( en )\left( NH _{3}\right)_{2} Cl _{2}\right]^{+}$has 2 geometrical isomers
- $\left[ FeCl _{4}\right]^{-}$has higher spin-only magnetic moment than $\left[ Co ( en )\left( NH _{3}\right)_{2} Cl _{2}\right]^{-}$
- The cobalt ion in $\left[ Co ( en )\left( NH _{3}\right)_{2} Cl _{2}\right]^{+}$has $s p^{3} d^{2}$ hybridization
The Correct Option is A, C
Solution and Explanation
A.$\left[ FeCl _{4}\right]^{-}$has tetrahedral geometry
C.$\left[ FeCl _{4}\right]^{-}$has higher spin-only magnetic moment than $\left[ Co ( en )\left( NH _{3}\right)_{2} Cl _{2}\right]^{-}$
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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.