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Coordination Compounds · Question 25

NEET (UG) 2021MatchingMedium📈 Topic in 12% papers+4−1
1

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

Answer

(1) (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

Solution

Magnetic moment = n(n+2) BM, n = number of unpaired electrons. CN- is a strong field ligand (pairing occurs); H2O is a weak field ligand.

(a) [Fe(CN)6]3-: Fe3+, 3d5 low spin (t2g5) ⇒ n = 1 ⇒ = 3 = 1.73 BM → (iv)

(b) [Fe(H2O)6]3+: 3d5 high spin (t2g3 eg2) ⇒ n = 5 ⇒ = 35 = 5.92 BM → (i)

(c) [Fe(CN)6]4-: Fe2+, 3d6 low spin (t2g6) ⇒ n = 0 ⇒ = 0 BM → (ii)

(d) [Fe(H2O)6]2+: 3d6 high spin (t2g4 eg2) ⇒ n = 4 ⇒ = 24 = 4.90 BM → (iii)

∴ (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

Answer: (1)

NEET (UG) 2021

Keep practising — Coordination Compounds

2

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

  1. SCN- < F- < CN- < C2O42-
  2. F- < SCN- < C2O42- < CN-
  3. CN- < C2O42- < SCN- < F-
  4. SCN- < F- < C2O42- < CN-
NEET (UG) 2020
3

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory?

  1. t2g4 eg2
  2. t2g6 eg0
  3. e3 t23
  4. e4 t22
NEET (UG) 2019
4

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)
NEET 2018
5

The type of isomerism shown by the complex [CoCl2(en)2] is

  1. geometrical isomerism
  2. coordination isomerism
  3. ionization isomerism
  4. linkage isomerism
NEET 2018
6

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
NEET 2018
7

Iron carbonyl, Fe(CO)5 is

  1. tetranuclear
  2. mononuclear
  3. trinuclear
  4. dinuclear
NEET 2018
8

An example of a sigma bonded organometallic compound is

  1. Grignard's reagent
  2. ferrocene
  3. cobaltocene
  4. ruthenocene.
NEET 2017
9

The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes : CoCl3 6NH3, CoCl3 5NH3, CoCl3 4NH3 respectively is

  1. 3AgCl, 1AgCl, 2AgCl
  2. 3AgCl, 2AgCl, 1AgCl
  3. 2AgCl, 3AgCl, 2AgCl
  4. 1AgCl, 3AgCl, 2AgCl
NEET 2017
10

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co3+ is

  1. [Co(H2O)6]3+, [Co(en)3]3+, [Co(NH3)6]3+
  2. [Co(H2O)6]3+, [Co(NH3)6]3+, [Co(en)3]3+
  3. [Co(NH3)6]3+, [Co(en)3]3+, [Co(H2O)6]3+
  4. [Co(en)3]3+, [Co(NH3)6]3+, [Co(H2O)6]3+
NEET 2017
11

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.
NEET 2017

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