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Coordination Compounds

JEE Main 2024 (Online) 8th April Morning ShiftMCQEasy📈 Topic in 10% papers+4−1
Ques. 1JEE Main 2024, 8 April (Morning Shift)

An octahedral complex with the formula CoCl3 nNH3 upon reaction with excess of AgNO3 solution gives 2 moles of AgCl. Consider the oxidation state of Co in the complex is 'x'. The value of "x + n" is .

  1. 6
  2. 5
  3. 3
  4. 8

Answer

(4) 8

Solution

2 mol AgCl means 2 Cl- are ionisable and 1 Cl is inside the coordination sphere.

With CN = 6 the sphere holds 5 NH3 + 1 Cl, so the complex is [Co(NH3)5Cl]Cl2 and n = 5.

x + 0 - 1 - 2 = 0, so x = 3 (Co is +3)

∴ x + n = 3 + 5 = 8

Answer: (4)

Keep practising — Coordination Compounds

Ques. 2JEE Main 2024, 8 April (Morning Shift)

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

  1. Both Statement I and Statement II are incorrect.
  2. Both Statement I and Statement II are correct.
  3. Statement I is incorrect but Statement II is correct.
  4. Statement I is correct but Statement II is incorrect.
Ques. 3JEE Main 2024, 8 April (Evening 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)-(III), (C)-(I), (D)-(IV)
  3. (A)-(I), (B)-(IV), (C)-(II), (D)-(III)
  4. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
Ques. 4JEE Main 2024, 8 April (Evening Shift)

Total number of unpaired electrons in the complex ions [Co(NH3)6]3+ and [NiCl4]2- is .

Ques. 5JEE Main 2024, 6 April (Morning Shift)

Consider the following complexes (A) [CoCl(NH3)5]2+, (B) [Co(CN)6]3-, (C) [Co(NH3)5(H2O)]3+, (D) [Cu(H2O)4]2+ The correct order of A, B, C and D in terms of wavenumber of light absorbed is :

  1. D < A < C < B
  2. B < C < A < D
  3. C < D < A < B
  4. A < C < B < D
Ques. 6JEE Main 2024, 6 April (Evening 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-III, B-I, C-IV, D-II
  3. A-I, B-III, C-IV, D-II
  4. A-III, B-IV, C-II, D-I
Ques. 7JEE Main 2024, 6 April (Evening Shift)

The correct IUPAC name of [PtBr2(PMe3)2] is :

  1. bis(trimethylphosphine)dibromoplatinum(II)
  2. dibromodi(trimethylphosphine)platinum(II)
  3. dibromobis(trimethylphosphine)platinum(II)
  4. bis[bromo(trimethylphosphine)]platinum(II)
Ques. 8JEE Main 2024, 5 April (Morning Shift)

The correct order of ligands arranged in increasing field strength.

  1. F- < Br- < I- < NH3
  2. H2O < -OH < CN- < NH3
  3. Br- < F- < H2O < NH3
  4. Cl- < -OH < Br- < CN-
Ques. 9JEE Main 2024, 5 April (Morning Shift)

Which one of the following complexes will exhibit the least paramagnetic behaviour ? [Atomic number, Cr = 24, Mn = 25, Fe = 26, Co = 27]

  1. [Fe(H2O)6]2+
  2. [Mn(H2O)6]2+
  3. [Co(H2O)6]2+
  4. [Cr(H2O)6]2+
Ques. 10JEE Main 2024, 5 April (Evening Shift)

The number of complexes from the following with no electrons in the t2 orbital is . TiCl4, [MnO4]-, [FeO4]2-, [FeCl4]-, [CoCl4]2-

  1. 4
  2. 2
  3. 3
  4. 1
Ques. 11JEE Main 2024, 5 April (Evening Shift)

The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and M is metal) involves sp3 hybridization. The number of geometrical isomers exhibited by the complex is :

  1. 0
  2. 2
  3. 3
  4. 4

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