The primary valency of Fe in K₃[Fe(CN)₆] is:

1. 3

2. 2

3. 1

4. zero

The IUPAC name for the complex [Co(NO₂)(NH₃)₅]Cl₂ is:

1. Nitro-N-pentaamminecobalt(III)chloride

2. Nitro-N-pentaamminecobalt(II)chloride

3. Pentamminenitro-N-cobalt(II)chloride

4. Pentaamminenitrito-N-cobalt(III)chloride.

The total number of possible isomers for the complex compound[Cu^II(NH₃)₄][Pt^IICl₄] are

1. 5

2. 6

3. 3

4. 4

Glycinato ligand is :

1. 

2. bidentate ligand

3. two donor sites N and O^-

4. all of the above

Out of TiF₆^2-,CoF₆^3-, Cu₂Cl₂ and NiCl₄^2-(At. no. Z of Ti=22, Co=27, Cu=29, Ni=28), the colourless species are

1. TiF₆^2- and CoF₆^3-

2. Cu₂Cl₂ and NiCl₄^2-

3. TiF₆^2- and Cu₂Cl₂ 

4. CoF₆^3- and NiCl₄^2-

The correct name of the compound [Cu(NH₃)₄](NO₃)₂, according to IUPAC system is:

1. cuprammonium nitrate

2. tetraamminecopper(II)dinitrate

3. tetraamminecopper(II)nitrate

4. tetraamminecopper(I)dinitrate

Ferrocene is :

1. Fe(${\eta }^{\mathit{5}}$-C₅H₅)₂

2. Fe(${\eta }^2$-C₅H₅)₂

3. Cr(${\eta }^{\mathit{5}}$-C₅H₅)₅

4. Os(${\eta }^{\mathit{5}}$-C₅H₅)₂

The ionization isomer of [Cr(H₂O)₄Cl(NO₂)]Cl is:

Among [Ni(CO)₄],[Ni(CN)₄]^2-, [NiCl₄]^2- species, the hybridisation states of the Ni atom are, respectively (At. no. of Ni=28)

1. sp³,dsp².dsp²

2. sp³,dsp²,sp³

3. sp³,sp³,dsp²

4. dsp²,sp³,sp³

The correct order of magnetic moments (only spin value in BM)among is:

1. [Fe(CN)₆]^4->[CoCl₄]^2->[MnCl₄]^2-

2. [MnCl₄]^2->[Fe(CN)₆]⁴>[CoCl⁴]^2-

3. [Fe(Cn)₆]⁴>[MnCl₄]^2->[CoCl₄]^2-

4. [MnCl₄]^2->[CoCl₄]^2->[Fe(CN)₆]^4-