The correct statement, among the following, regarding [Mn(CN)₆]^3- is:

1. It is sp³d² hybridised and octahedral in shape

2. It is sp³d² hybridised and tetrahedral in shape

3. It is d²sp³ hybridised and octahedral in shape

4. It is dsp² hybridised and square planar in shape

EAN of Fe in K₃[Fe(CN)₆] is

1. 34

2. 35

3. 36

4. 47

$\mathrm{Out} \mathrm{of} {\mathrm{TiF}}_6^{2-}, {\mathrm{CoF}}_6^{3-}, {\mathrm{Cu}}_2{\mathrm{Cl}}_2 \mathrm{and} {\mathrm{NiCl}}_4^{2-}$ (At. no. Z of Ti = 22, CO = 27, Cu = 29, Ni = 28), the colourless species are

(a) ${\mathrm{TiF}}_6^{2-} \mathrm{and} {\mathrm{CoF}}_6^{3-}$

(b) ${\mathrm{Cu}}_2{\mathrm{Cl}}_2 \mathrm{and} {\mathrm{NiCl}}_4^{2-}$$$

(c) ${\mathrm{TiF}}_6^{2-} \mathrm{and} {\mathrm{Cu}}_2{\mathrm{Cl}}_2$

(d) ${\mathrm{CoF}}_6^{3-} \mathrm{and} {\mathrm{NiCl}}_4^{2-}$

Which of the following complex will show geometrical as well as optical isomerism ?

1. [Pt(NH₃)₂Cl₂]

2. [Pt(NH₃)Cl₃]

3. [Pt(en)₂Cl₂]

4. [Pt(en)₃]⁴⁺

An example of a sigma bonded organometallic compound is:

1. Ruthenocene                 

2. Grignard's reagent

3. Ferrocene                     

4. Cobaltocene

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

1. 1 AgCl, 3 AgCl, 2 AgCl

2. 3 AgCl, 1 AgCl, 2 AgCl

3. 3 AgCl, 2 AgCl, 1 AgCl

4. 2 AgCl, 3AgCl,  1 AgCl

The hybridisation of Ni in the complex [Ni(CN)₄]^2- is:
(Atomic number of Ni = 28)

1. dsp²                               

2. sp³

3. d²sp²                             

4. d²sp³

The complexes [CO(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆] are examples of:

How many hydrate isomers are possible for the molecular formula CoCl₃,6H₂O?

1. One

2. Two

3. Three

4. Four

[Cr(en)₂Br₂]⁺ can show

(1) Optical isomerism

(2) Geometrical isomerism

(3) Both (1) and (2)

(4) Neither (1) nor (2)