MCQ (Practice) - Coordination Cmpd (Level 2) - Class 12 MCQ

Complexes [Co(SO₄)(NH₃)₅]Br and [CoBr(NH₃)₅]SO₄ can be distinguished by :

Amongst the following ions, which one has the highest paramagnetism?

Which of the following will produce a white preciptiate upon reacting with AgNO₃ ?

Which isomer of CrCl₃.6H₂O is dark green in colour and forms one mole of AgCl with excess of AgNO₃ solution

Which of the following are π-bonded organometallic compounds ?

Which of the following is /are inner orbital complex (es) as well as diamagnetic in nature.

Which of the following is /are correct about [Cu(NH₃)₄]SO₄

Which of the followng isomerism is /are shown by the complex [CoCl₂(OH)₂(NH₃)₂]Br ?

Both geometrical and optical isomerism are shown by

WHich of the following complexes have tetrahedral shape ?

Which of the following is /are paramagnetic

Co-ordination number of Cr in CrCl₃.5H₂O is six. The volume of 0.1 N AgNO₃needed to ppt. the chlorine in outer sphere in 200 ml of 0.01 M solution of the complex is /are :

When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (d_xy, d_yz, d_zx) and a set of degenerate orbitals of higher energy (d_{x² – y²} and d_z2). The orbitals with lower energy are called t_2g orbitals and those with higher energy are called e_g orbitals.

In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes of  and  lie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are

(i) Pairing may start with 4^th electron in t_2g orbitals.
(ii) Pairing may start normally with 6^th electrons when t_2g and e_g orbitals are singly filled.

Q.

In which of the following configuration hybridisation and magnetic moment of octahedral complexes are independent of nature of ligands.

(i) d³ configuration of any metal cation.
(ii) d⁶ configuration of IIIrd transition series metal cation.
(iii) d⁸ configuration of Ist transition series metal cation.
(iv) d⁷ configuration of any metal cation

Select the correct code :

When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (d_xy, d_yz, d_zx) and a set of degenerate orbitals of higher energy (d_{x² – y²} and d_z2). The orbitals with lower energy are called t_2g orbitals and those with higher energy are called e_g orbitals.

In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes of  and  lie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are

(i) Pairing may start with 4^th electron in t_2g orbitals.
(ii) Pairing may start normally with 6^th electrons when t_2g and e_g orbitals are singly filled.

Q.

Which of the following electronic arrangement is /are possible for inner orbital oct complex.

(I)  (II)  (III)  (IV) 

Select the correct code :

When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (d_xy, d_yz, d_zx) and a set of degenerate orbitals of higher energy (d_{x² – y²} and d_z2). The orbitals with lower energy are called t_2g orbitals and those with higher energy are called e_g orbitals.

In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes of  and  lie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are

(i) Pairing may start with 4^th electron in t_2g orbitals.
(ii) Pairing may start normally with 6^th electrons when t_2g and e_g orbitals are singly filled.

Q.

Select incorrect match for the following complexes.

(where AB  Unsym. bidentate ligand, a,b,c,d & e  monodentate ligands)

The pair of compounds having metals in their highest oxidation state is

[JEE-2004]

The compound having tetrahedral geometry is

Spin only magnetic moment of the compound Hg[Co(SCN)₄] is

[JEE-2005]

Which of the following pair is expected to exhibit same colour in solution ?

Which type of isomerism is shown by [Co(NH₃)₄Br₂] Cl ?