Coordination Compounds

Match List I with List II :

1. A-I, B-III, C-IV, D-II
2. A-III, B-IV, C-I, D-II
3. A-III, B-I, C-IV, D-II
4. A-IV, B-I, C-III, D-II

Which of the following are paramagnetic? Choose the correct answer from the options given below :

1. A and D only
2. A, D and E only
3. A and C only
4. B and E only

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

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :

1. (a)-(iv), (b)-(v), (c)-(ii), (d)-(i)
2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
3. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
4. (a)-(iii), (b)-(v), (c)-(i), (d)-(ii)

The geometry and magnetic behaviour of the complex [Ni(CO)4] are

1. square planar geometry and diamagnetic
2. tetrahedral geometry and diamagnetic
3. square planar geometry and paramagnetic
4. tetrahedral geometry and paramagnetic

Pick out the correct statement with respect to [Mn(CN)6]3-.

1. It is sp3d2 hybridised and tetrahedral.
2. It is d2sp3 hybridised and octahedral.
3. It is dsp2 hybridised and square planar.
4. It is sp3d2 hybridised and octahedral.

The hybridization involved in complex [Ni(CN)4]2- is (At. No. Ni = 28)

1. sp3
2. d2sp2
3. d2sp3
4. dsp2

A magnetic moment of 1.73 BM will be shown by one among the following

1. TiCl4
2. [CoCl6]4-
3. [Cu(NH3)4]2+
4. [Ni(CN)4]2-

Which among the following is a paramagnetic complex?

1. [Co(NH3)6]3+
2. [Pt(en)Cl2]
3. [CoBr4]2-
4. Mo(CO)6

Which is diamagnetic?

1. [Co(F)6]3-
2. [Ni(CN)4]2-
3. [NiCl4]2-
4. [Fe(CN)6]3-

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

1. [Ni(NH3)6]2+
2. [Zn(NH3)6]2+
3. [Cr(NH3)6]3+
4. [Co(NH3)6]3+

Which of the following complex compounds will exhibit highest paramagnetic behaviour? (At. No. Ti = 22, Cr = 24, Co = 27, Zn = 30)

1. [Cr(NH3)6]3+
2. [Co(NH3)6]3+
3. [Zn(NH3)6]2+
4. [Ti(NH3)6]3+

Of the following complex ions, which is diamagnetic in nature?

1. [NiCl4]2-
2. [Ni(CN)4]2-
3. [CuCl4]2-
4. [CoF6]3-

The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour? (At. Nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)

1. [Mn(H2O)6]2+
2. [Fe(H2O)6]2+
3. [Co(H2O)6]2+
4. [Cr(H2O)6]2+

Which of the following complex compounds will exhibit highest paramagnetic behaviour?

1. [Ti(NH3)6]3+
2. [Cr(NH3)6]3+
3. [Co(NH3)6]3+
4. [Zn(NH3)6]2+

The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)

1. [Fe(H2O)6]2+
2. [Ni(H2O)6]2+
3. [Cr(H2O)6]2+
4. [Mn(H2O)6]2+

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour?

1. [Zn(NH3)6]2+
2. [Cr(NH3)6]3+
3. [Co(NH3)6]3+
4. [Ni(NH3)6]2+

Among [Ni(CO)4], [Ni(CN)4]2-, [NiCl4]2- species, the hybridisation states at the Ni atom are, respectively [Atomic number of Ni = 28]

1. sp3, dsp2, dsp2
2. sp3, dsp2, sp3
3. sp3, sp3, dsp2
4. dsp2, sp3, sp3

In an octahedral structure, the pair of d orbitals involved in d2sp3 hybridisation is

1. dx2-y2, dz2
2. dxz, dx2-y2
3. dz2, dxz
4. dxy, dyz

The number of unpaired electrons in the complex ion [CoF6]3- is (Atomic no. : Co = 27)

1. 2
2. 3
3. 4
4. zero

Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic with the spin of electron?

1. [Cr(CO)6]
2. [Fe(CO)5]
3. [Fe(CN)6]4-
4. [Cr(NH3)6]3+

Which statement is incorrect?

1. Ni(CO)4 – tetrahedral, paramagnetic
2. [Ni(CN)4]2- – square planar, diamagnetic
3. Ni(CO)4 – tetrahedral, diamagnetic
4. [NiCl4]2- – tetrahedral, paramagnetic.