JEE Advanced · Chemistry · 23. Coordination Compounds
\(\mathrm{NiCl}_{2}\left\{\mathrm{P}\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{2}\left(\mathrm{C}_{6} \mathrm{H}_{5}\right)\right\}_{2}\) exhibits temperature depend-ent magnetic behaviour (paramagnetic/diamagnetic). The coordination geometries of \(\mathrm{Ni}^{2+}\) in the paramagnetic and diamagnetic states are respectively
- A tetrahedral and tetrahedral
- B square planar and square planar
- C tetrahedral and square planar
- D square planar and tetrahedral
Answer & Solution
Correct Answer
(C) tetrahedral and square planar
Step-by-step Solution
Detailed explanation
In both states (paramagnetic and diamagnetic) of the given complex, \(\mathrm{Ni}\) exists as \(\mathrm{Ni}^{2+}\) whose electronic configuration is \([\mathrm{Ar}] 3 d^{8} 4 s^{0}\).
In the above paramagnetic state the geometry of the complex is \(s p^{3}\) giving tetrahedral geometry.
The diamagnetic state is achieved by pairing of electrons in \(3 d\) orbital.
Thus, the geometry of the complex will be \(d s p^{2}\) giving square planar geometry.
In the above paramagnetic state the geometry of the complex is \(s p^{3}\) giving tetrahedral geometry.
The diamagnetic state is achieved by pairing of electrons in \(3 d\) orbital.
Thus, the geometry of the complex will be \(d s p^{2}\) giving square planar geometry.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Among PbS, CuS, HgS, MnS, , NiS, CoS, and , the total number of black coloured sulphides isJEE Advanced 2014 Easy
- The cubic unit cell structure of a compound containing cation and anion is shown below. When compared to the anion, the cation has smaller ionic radius. Choose the correct statement(s).
JEE Advanced 2020 Medium - The pair(s) of reagents that yield paramagnetic species is/areJEE Advanced 2014 Medium
- If the freezing point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia complex (which behaves as a strong electrolyte) is , the number of chloride(s) in the coordination sphere of the complex isJEE Advanced 2015 Medium
- Reaction of \(\mathbf{x}\) g of \(\mathrm{Sn}\) with \(\mathrm{HCl}\) quantitatively produced a salt. Entire amount of the salt reacted with \(\mathbf{y} g\) of nitrobenzene in the presence of required amount of \(\mathrm{HCl}\) to produce \(1.29 \mathrm{~g}\) of an organic salt (quantitatively).
(Use Molar masses (in \(\mathrm{g} \mathrm{mol}^{-1}\) ) of \(\mathrm{H}, \mathrm{C}, \mathrm{N}, \mathrm{O}, \mathrm{Cl}\) and \(\mathrm{Sn}\) as \(1,12,14,16,35\) and 119 , respectively).
The value of is_________ .JEE Advanced 2021 Easy - Among P, Q, R and S, the aromatic compound(s) is/are
JEE Advanced 2013 Hard
More PYQs from JEE Advanced
- Column I describes some situations in which a small object moves. Column II describes some characteristics of these motions. Match the situations in Column I with the characteristics in Column II and indicate your answer by darkening appropriate bubbles in the \(4 \times 4\) matrix given in the ORS.
JEE Advanced 2007 Hard - In a \(\triangle A B C\) with fixed base \(B C\), the vertex \(A\) moves such that \(\cos B+\cos C=4 \sin ^2 \frac{A}{2}\). If \(a, b\) and \(c\) denote the lengths of the sides of the triangle opposite to the angles \(A, B\) and \(C\) respectively, thenJEE Advanced 2009 Medium
- If \(P\) is a \(3 \times 3\) matrix such that \(P^{T}=2 P+I\), where \(P^{T}\) is the transpose of \(P\) and \(I\) is the \(3 \times 3\) identity matrix, then there exists a column matrix \(\quad X=\left[\begin{array}{l}x \\ y \\ z\end{array}\right] \neq\left[\begin{array}{l}0 \\ 0 \\ 0\end{array}\right]\) such thatJEE Advanced 2012 Medium
- Two large circular discs separated by a distance of are connected to a battery via a switch as shown in the figure. Charged oil drops of density are released through a tiny hole at the centre of the top disc. Once some oil drops achieve terminal velocity, the switch is closed to apply a voltage of across the discs. As a result, an oil drop of radius stops moving vertically and floats between the discs. The number of electrons present in this oil drop is __________. (neglect the buoyancy force, take acceleration due to gravity and charge on an electron (e) )
JEE Advanced 2020 Easy - The smallest division on the main scale of a Vernier calipers is . Ten divisions of the Vernier scale correspond to nine divisions of the main scale. The figure below on the left shows the reading of this calipers with no gap between its two jaws. The figure on the right shows the reading with a solid sphere held between the jaws. The correct diameter of the sphere is
JEE Advanced 2021 Medium - The major product of the following reaction is
JEE Advanced 2011 Hard