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Test: Coordination Chemistry- 2


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30 Questions MCQ Test Inorganic Chemistry | Test: Coordination Chemistry- 2

Test: Coordination Chemistry- 2 for Chemistry 2022 is part of Inorganic Chemistry preparation. The Test: Coordination Chemistry- 2 questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Coordination Chemistry- 2 MCQs are made for Chemistry 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Coordination Chemistry- 2 below.
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Test: Coordination Chemistry- 2 - Question 1

The number of manganese ions in tetrahedral and octahedral sites, respectively in Mn3O4 are:

Test: Coordination Chemistry- 2 - Question 2

The spinels CoFe2O4 and FeFe2O4, respectively are:

Test: Coordination Chemistry- 2 - Question 3

In the trigonal bipyramidal crystal field, the d orbital with the highest energy is:

Test: Coordination Chemistry- 2 - Question 4

The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total stabilization energy will be:

Test: Coordination Chemistry- 2 - Question 5

For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be:

Test: Coordination Chemistry- 2 - Question 6

The correct statement about the Cu–N bond distance in [Cu(NH3)6]2+ is:

Test: Coordination Chemistry- 2 - Question 7

Hybridizat ion of Ni(II) in K2[NiBr4] is:

Test: Coordination Chemistry- 2 - Question 8

Which of the following shows NORMAL spinel structure:

Detailed Solution for Test: Coordination Chemistry- 2 - Question 8

The spinels have the general chemical formula AB2X4

    Where:

    AII = a divalent cation like Mg, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Sn 

    BIII = a trivalent cation like Al, Ga, In, Ti, V, Cr, Mn, Fe, Fe, Co, Ni 

    X = O, S, Se etc.

Examples of Normal Spinels: MgAl2O(known as spinel), Mn3O4, ZnFe2O4, FeCr2O4 (chromite) etc.

Test: Coordination Chemistry- 2 - Question 9

CFSE of transition metal complexes can be determined by:

Test: Coordination Chemistry- 2 - Question 10

Which of the following pairs of electronic configuration of high–spin transition metal ions (3d) in an octahedral field undergo a substantial Jahn–Teller distortion:

Test: Coordination Chemistry- 2 - Question 11

Jahn–Teller distortion of CuSO4.5H2O acts to:

Test: Coordination Chemistry- 2 - Question 12

According to the crystal field theory, Ni2+ can have two unpaired electron in:

Test: Coordination Chemistry- 2 - Question 13

For the complexes:

(I) [Ni(H2O)6]2+
(II) [Mn(H2O)6]2+
(III) [Cr(H2O)6]3+
(IV) [Ti(H2O)6]3+ ,

The ideal octahedral geometry will not be observed in:

Detailed Solution for Test: Coordination Chemistry- 2 - Question 13

Correct Answer :- d

Explanation : [Cr(H2O)6]3+ shows the strongest distortion from the regular octahedral structure.

The central Cr atom in +2 oxidation state has d7 outer electronic configuration. It has degenerate electronic states occupying the eg orbital set and tend to show stronger Jahn-Teller effects.

Test: Coordination Chemistry- 2 - Question 14

The enthalpies of hydration of Ca2+, Mn2+, Zn2+ follow the order:

Test: Coordination Chemistry- 2 - Question 15

The correct order of acidity among the following species is:

Test: Coordination Chemistry- 2 - Question 16

The correct order of d-orbital splitting in a trigonal bipyramidal geo metry is:

Test: Coordination Chemistry- 2 - Question 17

It is known that pKa of water is 15.7. Based on this water pKa benchmark, arrange the fo llowing solvated metals–aqua io ns in order of their increasing acidity : Mn2+(H2O)6 , Fe3+(H2O)6, Cu2+(H2O)6 ,Ca2+(H2O)6

Detailed Solution for Test: Coordination Chemistry- 2 - Question 17

Correct Answer :- D

Explanation : The general trend of increasing electronegativity of the element when moving from left to right ia any horizontal row. The electronegativity increases due to which charge separation and ionization of hydrides increases.This increases the acidic strength of hydrides. 

The correct order is :

Ca2+, Mn2+, Fe3+, Cu2+

Test: Coordination Chemistry- 2 - Question 18

The pair of simple and inverse spinels respectively is:

Test: Coordination Chemistry- 2 - Question 19

Stabilization of highest oxidation states of transition metals by strong electronegative ligands due to:

Test: Coordination Chemistry- 2 - Question 20

Which metal ions have zero CFSE?

Test: Coordination Chemistry- 2 - Question 21

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

Test: Coordination Chemistry- 2 - Question 22

The pale colour of is due to:

Test: Coordination Chemistry- 2 - Question 23

MnCr2O4 is:

Test: Coordination Chemistry- 2 - Question 24

The number of donor sites in dimethyl glyoxime, glycinato, diethylene triamine and EDTA are respectively:

Test: Coordination Chemistry- 2 - Question 25

Among the complexes:

(I) K4[Fe(CN)6],
(II) K3[Co(CN)6],
(III) K4[Mn(CN)6], Jahn – Teller  distortion is expected in.

Test: Coordination Chemistry- 2 - Question 26

The complex [Fe(phen)2(NCS)2]   (phen = 1,10–phenanthroline) shows spin cross–over behavior.CFSE and µeff at 250 and 150 K, respectively are:

Test: Coordination Chemistry- 2 - Question 27

Given that the expected spin-only magnetic moment for (Et4N)2[NiCl4] is 2.83 BM, the total number of unpaired electrons in this complex is.

Test: Coordination Chemistry- 2 - Question 28

Of the following metal ions, which has the largest magnetic moment in its low-spin octahedral complexes?

Test: Coordination Chemistry- 2 - Question 29

The electronic configurations that have orbital angular momentum contribution in octahedral environment are:

Test: Coordination Chemistry- 2 - Question 30

The colour of potassium dichromate is due to:

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