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Coordination Compounds

JEE Main 2024 (Online) 31st January Morning ShiftNumericalEasy📈 Topic in 54% papers+4
Ques. 1JEE Main 2024, 31 January (Morning Shift)

The 'Spin only' Magnetic moment for [Ni(NH3)6]2+ is 10-1 BM. (given = Atomic number of Ni : 28)

Answer

28

Solution

Ni (Z = 28): [Ar]3d84s2 ⇒ Ni2+: 3d8; octahedral field ⇒ t2g6eg2

[figure]

∵ With 8 d-electrons, eg always holds 2 unpaired electrons (whatever the field strength of NH3)

= n(n+2) = 8 = 2.83 BM = 28.3 10-1 BM ≈ 28 10-1 BM

Answer: 28

Keep practising — Coordination Compounds

Ques. 2JEE 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
Ques. 3JEE 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. 4JEE 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. 5JEE 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. 6JEE 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. 7JEE 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. 8JEE 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. 9JEE 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. 10JEE 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. 11JEE 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

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