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Coordination Compounds

JEE Main 2024 (Online) 31st January Evening ShiftMCQEasy📈 Topic in 32% papers+4−1
Ques. 1JEE Main 2024, 31 January (Evening Shift)

Select the option with correct property -

  1. [Ni(CO)4] and [NiCl4]2- both Paramagnetic
  2. [Ni(CO)4] and [NiCl4]2- both Diamagnetic
  3. [NiCl4]2- Diamagnetic, [Ni(CO)4] Paramagnetic
  4. [Ni(CO)4] Diamagnetic, [NiCl4]2- Paramagnetic

Answer

(4) [Ni(CO)4] Diamagnetic, [NiCl4]2- Paramagnetic

Solution

[Ni(CO)4]: Ni(0), 3d8 4s2; CO is a strong-field ligand ⇒ 4s electrons pair into 3d ⇒ 3d10, sp3, 0 unpaired ⇒ diamagnetic

[NiCl4]2-: Ni2+, 3d8; Cl- is weak-field ⇒ no pairing, sp3 (tetrahedral), 2 unpaired ⇒ paramagnetic

Answer: (4)

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Ques. 2JEE Main 2024, 31 January (Evening Shift)

Match List I with List II Choose the correct answer from the options given below:

  1. A-IV, B-I, C-II, D-III
  2. A-III, B-II, C-IV, D-I
  3. A-II, B-III, C-IV, D-I
  4. A-IV, B-III, C-I, D-II
Ques. 3JEE Main 2024, 30 January (Morning Shift)

Choose the correct statements from the following : Choose the correct answer from the options given below :

  1. (B), (C), (E) only
  2. (A), (D), (E) only
  3. (C), (D), (E) only
  4. (A), (B), (C) only
Ques. 4JEE Main 2024, 30 January (Evening Shift)

The coordination geometry around the manganese in decacarbonyldimanganese(0) is

  1. Trigonal bipyramidal
  2. Square pyramidal
  3. Square planar
  4. Octahedral
Ques. 5JEE Main 2024, 30 January (Evening Shift)

Number of complexes which show optical isomerism among the following is . cis- [Cr(ox)2Cl2]3-, [Co(en)3]3+, cis- [Pt(en)2Cl2]2+, cis- [Co(en)2Cl2]+, trans- [Pt(en)2Cl2]2+, trans- [Cr(ox)2Cl2]3-

Ques. 6JEE Main 2024, 29 January (Morning Shift)

Match List I with List II Choose the correct answer from the options given below:

  1. A-IV, B-III, C-I, D-II
  2. A-II, B-IV, C-I, D-III
  3. A-III, B-II, C-IV, D-I
  4. A-II, B-III, C-IV, D-I
Ques. 7JEE Main 2024, 29 January (Morning Shift)

In which one of the following metal carbonyls, CO forms a bridge between metal atoms?

  1. [Os3(CO)12]
  2. [Ru3(CO)12]
  3. [Mn2(CO)10]
  4. [Co2(CO)8]
Ques. 8JEE Main 2024, 29 January (Evening Shift)

The correct IUPAC name of K2MnO4 is

  1. Potassium tetraoxidomanganate (VI)
  2. Dipotassium tetraoxidomanganate (VII)
  3. Potassium tetraoxopermanganate (VI)
  4. Potassium tetraoxidomanganese (VI)
Ques. 9JEE Main 2024, 27 January (Morning Shift)

Consider the following complex ions P = [FeF6]3- Q = [V(H2O)6]2+ R = [Fe(H2O)6]2+ The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :

  1. R < Q < P
  2. R < P < Q
  3. Q < R < P
  4. Q < P < R
Ques. 10JEE Main 2024, 27 January (Evening Shift)

Identify from the following species in which d2sp3 hybridization is shown by central atom :

  1. [Co(NH3)6]3+
  2. SF6
  3. [PtCl4]2-
  4. BrF5
Ques. 11JEE Main 2024, 27 January (Evening Shift)

The Spin only magnetic moment value of square planar complex [Pt(NH3)2Cl(NH2CH3)]Cl is B.M. (Nearest integer) (Given atomic number for Pt = 78)

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