Test: Coordination Chemistry- 3


30 Questions MCQ Test Inorganic Chemistry | Test: Coordination Chemistry- 3


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Attempt Test: Coordination Chemistry- 3 | 30 questions in 90 minutes | Mock test for Chemistry preparation | Free important questions MCQ to study Inorganic Chemistry for Chemistry Exam | Download free PDF with solutions
QUESTION: 1

The correct order of wavelength (λmax) of the halide to metal charge-transfer band of [Co(NH3)5Cl]2+ (I), [Co(NH3)5Br]2+ (II) and [Co(NH3)5I]2+ (III), is 

Solution:

QUESTION: 2

The purple colour of iodine vapours is due to:

Solution:

To Know the color of the halogens you have to know the MO diagram of X2 (X=F,Cl,Br,I).

The color is due to the transition from π* to σ* in the MO diagram of I2.

The electrons of π* absorb suitable frequency of light and go to sigma* molecular orbital.

Transition from HOMO to LUMO and the complimentary color is observed.

I2 has Violet color ,it is the complimentary color of orange-yellow region,so,the light of orange yellow region is absorbed and violet color is seen.

QUESTION: 3

The ground state term symbols for high spin d5s1 and d5 configurations, respectively are:

Solution:
QUESTION: 4

The volume (in mL) of 0.1 M AgNO3 required for complex precipitation of chloride ions present in 30 mL of 0.01 M solution of [Cr(H2O)5Cl]Cl2, as silver chloride is close to

Solution:

QUESTION: 5

The strongest ligand in spectro–chemical series is:

Solution:
QUESTION: 6

[NiCl2(PPh3)2] is paramagnetic with μeff = 2.9 BM. All the four ligands are monodentate. The geometry of the molecule is:

Solution:
QUESTION: 7

A solution containing 2.675 g of CoCl3 · 6NH3 (molar mass = 267.5 g mol–1) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol–1). The formula of the complex is
(At. Mass of Ag = 108 u)

Solution:
QUESTION: 8

Ground term symbol for Mn2+ is:

Solution:
QUESTION: 9

For which of the following ions is the colour in aqueous solution not caused by any d–d transition?

Solution:
QUESTION: 10

The cyano complex that exhibit highest value of paramagnetism is:

Solution:
QUESTION: 11

The ionisation isomer of [Cr(H2O)4Cl(NO2)C] is

Solution:

Ionization isomers are identical except for a ligand has exchanged places with anion or neutral molecule that was originally outside the coordination complex.

Thus, in Ionization isomerism the central ion and the other ligands are identical.

So, according to the definition, Cl- is replaced by NO2-​ in ionization sphere.

Thus the correct answer is option B.

QUESTION: 12

An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be 

Solution:
QUESTION: 13

Synergic bonding is absent in:

Solution:
QUESTION: 14

The pair of compounds having metals in their highest oxidation state is

Solution:
QUESTION: 15

Which of the following complex is high spin?

Solution:
QUESTION: 16

The absorption of

Solution:
QUESTION: 17

Correct relat ionship between pairing energy (P) and C.F.S.E (∆0) in complex ion [Ir(H2O)6]3+ is:

Solution:
QUESTION: 18

In which of the following pairs, both the complexes have the same hybridization?

Solution:
QUESTION: 19

The value of CFSE (∆0) for complexes given below follow the order:

(I) [Co(NH3)6]3+
(II) [Rh(NH3)6]3+
(III) [Ir(NH3)6]3+

Solution:
QUESTION: 20

Cr3+ form for complexes with four different ligands which are [Cr(Cl)6]3–,[Cr(H2O)6]3+, [Cr(NH3)6]3+ and [Cr(CN)6]3–. The order of CFSE (∆0) in these complexes is in the order:

Solution:
QUESTION: 21

The d–orbital, which are stabilized in an octahedral magnetic field, are:

Solution:
QUESTION: 22

Total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)]is

Solution:
QUESTION: 23

Which of the following is correct arrangement of ligand in terms of the Dq values of their complexes with any particular ‘hard’ metal ion:

Solution:
QUESTION: 24

The extent of crystal field splitting in octahedral complexes of the given metal with particular weak field ligand are:

Solution:
QUESTION: 25

The molar absorptivity at λmax is minimum for:

Solution:
QUESTION: 26

A magnetic moment of 1.73 BM will be shown by one among the following

Solution:
*Multiple options can be correct
QUESTION: 27

Consider the following two reactions:

According to given information the correct statement (s) is/are:

Solution:
QUESTION: 28

The value of n for the complex [Fe(CO)4(SiMe3)]n satisfying the 18-electron rule is 

Solution:

*Multiple options can be correct
QUESTION: 29

Select correct statement (s) regarding octahedron complex having CFSE = –1.2∆0.

Solution:
QUESTION: 30

Which has maximum paramagnetic character?

Solution:
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