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Coordination Compounds · Question 85

AIPMT 2004MCQEasy📈 Topic in 38% papers+4−1
1

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

Answer

(1) dx2-y2, dz2

Solution

In octahedral d2sp3 hybridisation the six hybrid orbitals point along x, y and z towards the six ligands.

The d orbitals used must have their lobes along the axes: dx2-y2 (along x and y) and dz2 (along z).

dxy, dyz and dxz have lobes between the axes, they are not used.

Answer: (1)

AIPMT 2004

Keep practising — Coordination Compounds

2

Which of the following is considered to be an anticancer species?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2004
3

Vitamin B12 contains

  1. Fe(II)
  2. Co(III)
  3. Zn(II)
  4. Ca(II)
AIPMT 2003
4

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

  1. 2
  2. 3
  3. 4
  4. zero
AIPMT 2003
5

Among the following which is not the -bonded organometallic compound?

  1. K[PtCl3( 2-C2H4)]
  2. Fe( 5-C5H5)2
  3. Cr( 6-C6H6)2
  4. (CH3)4Sn
AIPMT 2003
6

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+
AIPMT 2002
7

The hypothetical complex chloro diaquatriammine cobalt(III) chloride can be represented as

  1. [CoCl(NH3)3(H2O)2]Cl2
  2. [Co(NH3)3(H2O)Cl3]
  3. [Co(NH2)3(H2O)2Cl]
  4. [Co(NH3)3(H2O)3]Cl3
AIPMT 2002
8

In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is

  1. a thin layer of Ag is formed on Cu
  2. more voltage is required
  3. Ag+ ions are completely removed from solution
  4. less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2]- ion.
AIPMT 2002
9

CuSO4 when reacts with KCN forms CuCN, which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex

  1. K2[Cu(CN)4]
  2. K3[Cu(CN)4]
  3. CuCN2
  4. Cu[KCu(CN)4]
AIPMT 2002
10

Which of the following will give maximum number of isomers?

  1. [Co(NH3)4Cl2]
  2. [Ni(en)(NH3)4]2+
  3. [Ni(C2O4)(en)2]
  4. [Cr(SCN)2(NH3)4]+
AIPMT 2001
11

Coordination number of Ni in [Ni(C2O4)3]4- is

  1. 3
  2. 6
  3. 4
  4. 2
AIPMT 2001

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