Coordination compounds

Vitamin B12 is a coordination compound of __________ transition metal.

Cobalt

In coordination compounds, the species outside the square bracket are called ___________ .

counter ions or ionisation sphere

The platinum complex Cis - [Pt(NH3)2 Cl2] is used in the treatment of __________

Cancer

1 mol of [Co(NH3)5 Cl]Cl2 can give ____________ moles of AgCl when treated with AgNO3.

two

As per Werner’s theory the secondary valency of [Pt(NH3)2 Cl2]

four

The type of structural isomerism shown by the complexes [Pt(NH3)4][CuCl4] and [Cu(NH3)4][PtCl4] is

Coordination isomerism

The ________________ geometry with coordination #.4 does not show geometrical isomerism.

Tetrahedral

The total number of geometrical isomers shown by compound [Pt(NH3)(py)(NH2OH)(NO2)]+ is

Three

The ________ isomer of complex [Cocl2 (en)2] is optically inactive

trans

In hexaamminechromium (III) ion, the oxidation state of Cr is ________

+3

The spin only magnetic moment of Fe^+3 is 5.916 BM, then the number of unpaired electrons in Fe ^ 3+ will be ________

5

Out of [Co(NH3)5 (SO4)]Br and [Co (NH3)5 (Br)]SO4 the IUPAC name of complex which gives white precipitate with BaCl2 is _______ .

Pentaminebromido cobalt (III) sulphate

The CFSE value for d^6 high spin octahedral complex is _______ .

-0.4

The total number of ions provided by [Pt(NH3)4]Cl4 in aqueous solution is _____________ .

5

The magnitude of CFSE increases with increase in __________ quantum number.

principal

Out of Cu²+, Ni²+, Co²+ complexes, the most stable complexes are given by Cu²+ due to its _____________ .

Small size

The formula o red precipitate obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II) is ______________.

Ni(dmg)2

When 0.1 mol CoCl3(NH3)5 is treated with excess of AgNO3, 0.2 mol of AgCl is obtained. The formula of the complex is ______________ .

[Co(NH3)5 Cl]Cl2

CuSO4. 5H2O is blue in colour but CuSO4 is colourless due to the absence of free __________ .

H2O

When excess of aq KCN solution is added to an aqueous solution of copper sulphate the complex [Cu(CN)4)]^2- is formed. On passing H2S gas through this solution no precipitate of CuS is formed due to the unavailability of ________ ions in aqueous solution.

Cu^+2 ion

The octahedral complex of a metal ion M^+3 with four monodentate ligands L1, L2, L3, and L4 absorb wavelength in the region of red, green, yellow, and blue respectively. The increasing order of ligand strength of the four ligands is ____________ .

L1 < L3 < L2 < L4

In black and white photography, developed film is fixed by washing with hypo solution which dissolves the unde-composed AgBr to form a complex ion ________________ .

[Ag(S2O3)2]^-3

According to IUPAC nomenclature, Sodium Nitroprusside is named as ________________.

Sodium pentacyanonitrosylferrate (II)

In order to make an octahedral Complex of Co^ +3 ion with EDTA, _____________ number of EDTA molecules will be required.

one