Question:
Select the correct statement.
Select the correct statement.
Show Hint
CO and CN$^-$ are strong field ligands $\longrightarrow$ pairing $\longrightarrow$ diamagnetic complexes.
Updated On: Apr 22, 2026
- \([Ni(CN)_4]^{2-}\) is diamagnetic whereas \([Ni(CO)_4]\) is paramagnetic.
- \([Ni(CN)_4]^{2-}\) and \([Ni(CO)_4]\) both are diamagnetic.
- \([Ni(CN)_4]^{2-}\) is \(sp^3\) hybridised and square planar whereas \([Ni(CO)_4]\) is \(dsp^2\) hybridised and tetrahedral.
- \([Ni(CN)_4]^{2-}\) is paramagnetic and \(dsp^2\) hybridised whereas \([Ni(CO)_4]\) is diamagnetic and \(sp^3\) hybridised.
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
• \( CN^- \) is strong field $\longrightarrow$ pairing $\longrightarrow$ diamagnetic
• \( CO \) is strong field $\longrightarrow$ pairing $\longrightarrow$ diamagnetic
Step 1: \([Ni(CN)_4]^{2-}\)
Ni\(^{2+}\), \(d^8\), strong field $\longrightarrow$ \(dsp^2\), square planar, diamagnetic
Step 2: \([Ni(CO)_4]\)
Ni\(^{0}\), \(d^{10}\), \(sp^3\), tetrahedral, diamagnetic
Step 3: Conclusion.
Both complexes are diamagnetic.
• \( CN^- \) is strong field $\longrightarrow$ pairing $\longrightarrow$ diamagnetic
• \( CO \) is strong field $\longrightarrow$ pairing $\longrightarrow$ diamagnetic
Step 1: \([Ni(CN)_4]^{2-}\)
Ni\(^{2+}\), \(d^8\), strong field $\longrightarrow$ \(dsp^2\), square planar, diamagnetic
Step 2: \([Ni(CO)_4]\)
Ni\(^{0}\), \(d^{10}\), \(sp^3\), tetrahedral, diamagnetic
Step 3: Conclusion.
Both complexes are diamagnetic.
Was this answer helpful?
0
0
Top MET Chemistry Questions
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
- Ethyl chloride is converted into diethyl ether by:
- Correct order of reactivity:
- A group of 13 element if added in small amounts to Ge, then the type of semiconductor formed is
- Consider the following statements I. Repulsive forces are significant when the molecules are close together on average. II. Attractive intermolecular forces are important when the molecules are fairly close together but not necessarily touching. III. Attractive forces are ineffective when the molecules are for apart. Select correct statements.
View More Questions
Top MET Inorganic chemistry Questions
- Cane sugar on treating with conc. $\mathrm{H}_2\mathrm{SO}_4$ gives char. It is because $\mathrm{H}_2\mathrm{SO}_4$ is
- The noble gas used for treatment of cancer is
- Purification of NaCl by passage of hydrogen chloride through brine is based on
- The first compound of noble gas prepared by Bartlett was
- Which of the following is diamagnetic?
View More Questions
Top MET Questions
- A coil of 100 turns and area $2 \times 10^{-2}m^2 $ is pivoted about a vertical diameter in a uniform magnetic field and carries a current of 5A. When the coil is held with its plane in north-south direction, it experiences a couple of 0.33 Nm. When the plane is east-west, the corresponding couple is 0.4 Nm, the value of magnetic induction is [Neglect earth's magnetic field]
- $\int\limits_{0}^{8}| x -5| d x$ is equal to
- Radiation, with wavelength 6561 $?$ falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of $3 \times 10^{-4} T$. If the radius of the largest circular path followed by the electrons is 10 mm, the work function of the metal is close to :
- In intrinsic semiconductor at room temperature number of electrons and holes are
- Which of the following product is formed in the reaction $ CH_3MgBr {->[(i)CO_2][(ii)H_2O]} ? $
View More Questions