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Coordination Compounds

JEE Main 2024 (Online) 6th April Evening ShiftMCQEasy📈 Topic in 3% papers+4−1
Ques. 1JEE 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)

Answer

(3) dibromobis(trimethylphosphine)platinum(II)

Solution

Pt: x + 2(-1) + 2(0) = 0 x = +2 ⇒ platinum(II)

Ligands alphabetically (prefixes di / bis ignored): bromo (b) before trimethylphosphine (t)

∵ trimethylphosphine already contains a numerical prefix, its count is written bis( )

(1): t-ligand written before b-ligand ⇒ (1) is wrong

(2): 'di' used for a ligand name in brackets ⇒ (2) is wrong

(4): Br and PMe3 are separate ligands, not one group ⇒ (4) is wrong

Answer: (3)

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Ques. 2JEE 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. 3JEE 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. 4JEE 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. 5JEE 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
Ques. 6JEE Main 2024, 4 April (Morning Shift)

Number of complexes from the following with even number of unpaired "d" electrons is [V(H2O)6]3+, [Cr(H2O)6]2+, [Fe(H2O)6]3+, [Ni(H2O)6]3+, [Cu(H2O)6]2+ [Given atomic numbers: V = 23, Cr = 24, Fe = 26, Ni = 28, Cu = 29]

  1. 1
  2. 5
  3. 2
  4. 4
Ques. 7JEE Main 2024, 4 April (Morning Shift)

The correct sequence of ligands in the order of decreasing field strength is :

  1. NCS- > EDTA4- > CN- > CO
  2. CO > H2O > F- > S2-
  3. S2- > -OH > EDTA4- > CO
  4. -OH > F- > NH3 > CN-
Ques. 8JEE Main 2024, 4 April (Evening Shift)

If an iron (III) complex with the formula [Fe(NH3)x(CN)y]- has no electron in its eg orbital, then the value of x + y is

  1. 6
  2. 4
  3. 3
  4. 5
Ques. 9JEE Main 2024, 4 April (Evening Shift)

The number of unpaired d-electrons in [Co(H2O)6]3+ is .

  1. 0
  2. 2
  3. 1
  4. 4
Ques. 10JEE Main 2024, 1 February (Morning Shift)

Which of the following complex is homoleptic?

  1. [Ni(NH3)2Cl2]
  2. [Co(NH3)4Cl2]+
  3. [Fe(NH3)4Cl2]+
  4. [Ni(CN)4]2-
Ques. 11JEE Main 2024, 1 February (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. Statement I is incorrect but Statement II is correct
  2. Both Statement I and Statement II are correct
  3. Both Statement I and Statement II are incorrect
  4. Statement I is correct but Statement II is incorrect

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