Which statement is incorrect
Which statement is incorrect
Ni(CO)4 – Tetrahedral, paramagnetic
Ni(CN)-24 - Square planar, diamagnetic
Ni(CO)4 - Tetrahedral, diamagnetic
[Ni(Cl)4]-2 – Tetrahedral, paramagnetic
The Correct Option is A
Solution and Explanation
The correct option is(A): Ni(CO)4 – Tetrahedral, paramagnetic.
Geometry: Ni(CO)4 is not tetrahedral. It has a square planar geometry. The nickel atom (Ni) is bonded to four carbon monoxide (CO) ligands in a flat, square arrangement.
Magnetic Properties: Ni(CO)4 is indeed paramagnetic. It has unpaired electrons in its molecular orbital diagram, making it attracted to an external magnetic field.
So, the statement that Ni(CO)4 is tetrahedral is incorrect; it has a square planar geometry.
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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.