Home
Class 12
CHEMISTRY
CN^(-) is a strong field ligand. This is...

`CN^(-)` is a strong field ligand. This is due to the fact that

A

It is a pseudohalide

B

It can accept electrons from metal species

C

It forms high spin complexes with metal species

D

It carries negative charge

Text Solution

AI Generated Solution

The correct Answer is:
To determine why CN⁻ is a strong field ligand, we can analyze the characteristics of CN⁻ and its interactions with metal ions. ### Step-by-Step Solution: 1. **Understanding Ligands**: Ligands are ions or molecules that can donate a pair of electrons to a metal to form a coordinate bond. Strong field ligands are those that create a large splitting of the d-orbitals in transition metal complexes. 2. **Characteristics of CN⁻**: The cyanide ion (CN⁻) is known to be a strong field ligand. This is primarily due to its ability to form strong bonds with metal ions. 3. **Electron Pair Donation**: CN⁻ can act as a Lewis base, meaning it can donate a pair of electrons to the metal ion. This ability to donate electrons is crucial for forming stable complexes. 4. **Crystal Field Stabilization Energy (CFSE)**: Strong field ligands like CN⁻ result in a high CFSE, which stabilizes the low spin complexes formed with transition metals. This is because they cause a significant splitting of the d-orbitals, leading to a preference for pairing of electrons in the lower energy orbitals. 5. **Comparison with Other Ligands**: Unlike weak field ligands, which may lead to high spin configurations, CN⁻ promotes low spin configurations due to its strong field nature. 6. **Conclusion**: Therefore, the reason CN⁻ is classified as a strong field ligand is that it can accept electrons from metal species, leading to the formation of stable low spin complexes. ### Final Answer: CN⁻ is a strong field ligand because it can accept electrons from metal species.
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

The strong field ligand is "

The solubility ofmethanol in water is due to the fact that :

Knowledge Check

  • Earth is flattened at the poles and budges at the eqator. This is due to the fact that

    A
    the earth revolves around the sun in an elliptical orbit
    B
    the angular velocity of spinning about its axis is more at the equator
    C
    the centrifugal force is more at the equator than at poles.
    D
    none of these.

  • Dissolution of ammonium chloride in water is an endothermic reaction, yet it is a spontaneous process. This is due to the fact that

    A
    `DeltaH" is "+ve, DeltaS" is "-ve`
    B
    `DeltaH" is "-ve, DeltaS" is "+ve`
    C
    `DeltaH" is "+ve, DeltaS" is "+ve and DeltaH lt TDeltaS`
    D
    `DeltaH" is "+ve and DeltaH gt T DeltaS`

  • Sulphates of Be and Mg are readily soluble in water but sulphates of Ca, Sr and Ba are insoluble. This is due to the fact

    A
    the greater hydration enthapies of `Be^(2+) and Mg^(2+)` overcome the lattice enthalpy
    B
    high lattice enthalpy of `Be^(2+) and Mg^(2+)` makes them soluble in water
    C
    solubility decreases from `BeSO_(4)` to `BaSO_(4)` due to increase in ionic size
    D
    `BeSO_(4) and MgSO_(4)` are ionic in nature while other sulphates are covalent

    • Similar Questions

    Explore conceptually related problems

    Square planar complexes are formed by d^(8) ions with strong field ligands The crystal field splitting Delta_(0) is larger for the second and theird row transition elements and for more highly charged species All the complexes having 4d^(8) and 5d^(8) configurations are mostly square planar including those with weak field ligands such as halide ions square planar complexes can show geometrical isomerism but they do not show optical isomerism due to the presence of plane of symmetry Among the following complexes which has a square planar geometry? (a) [RhCl(CO)(PPh_(3))_(2)] (b) K_(3)[Cu(CN)_(4)] (c ) [Ni(CO)_(4)] (d) K_(2)[Zn(CN)_(4)] .

    Which of the following statements is not true of the reaction given below (a) it is a ligand -substition reaction (b) NH_(3) is a relatively strong-field ligand while H_(2)O is a weak field ligand (c ) During the reaction there is a change in colour from light blue to dark blue (d) [Cu(NH_(3))_(4)]^(2+) has a tetrahedral structure and is paramagnetic .

    Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that

    In Young's interference experiment, the central bright fringe can be indentified due to the fact that it

    Grapes immersed in a strong solution of sugar shrink. This is due to a phenomenon known as …………………………..

    Home
    Profile