Werner's Coordination Theory

Q.

What is spectrochemical series? Explain the difference between a weak field ligand and a strong field ligand.

Q.

Iron carbonyl, $\mathrm{Fe}{\left(\mathrm{CO}\right)}_5$ is __________.

1. trinuclear

2. tetranuclear

3. binuclear

4. mononuclear

Q. 33.Find effective atomic number of Mn in Mn2(CO)10 and Fe in ferrocene ??

Q. Spin only magnetic moment of $F{e}^{2+}$ is:

1. 1.73 BM
2. 3.87 BM
3. 4.90 BM
4. 5.92 BM

Q.

Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at ${25}^{\circ }$?

1. $CoC{l}_3.3N{H}_3$

2. $CoC{l}_3.6N{H}_3$

3. $CoC{l}_3.4N{H}_3$

4. $CoC{l}_3.5N{H}_3$

Q. Which of the following does not give an oxide on heating
1) MgCO3
2) Li2CO3
3) ZnCO3
4) K2CO3

Q.

Explain the bonding in coordination compounds in terms of Werner's postulates.

Q. Which chloro derivative of benzene among the following would undergo hydrolysis most readily with aqueous Sodium Hydroxide to furnish the corresponding hydroxy derivative?

1. 
2. 
   
3. 
4. $C_6{H}_{5}Cl$

Q.

Which amongst the following has maximum conductivity?

1. $\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$

2. $\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right]$

3. $\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]\mathrm{Cl}$

4. $\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2$

Q.

The nitride ion in lithium nitride is composed of how many electrons and protons?

Q.

The IUPAC name of $\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_4\left({\mathrm{H}}_2\mathrm{O}\right)\mathrm{Cl}\right]{\mathrm{Cl}}_2$

Q. Which one of the following statements is incorrect about werner’s theory?

1. Secondary valencies are satisfied by negative ions only
2. Secondary valencies are directional whereas primary valencies are non-directional
3. Secondary valency is the same thing as coordination number
4. Primary valency is the same thing as oxidation state

Q.

The valency of cupric ion is ______ .

Q.

Write the molecular formulae of all the compounds that can be formed by the combination of the following ions ${\mathrm{Cu}}^{2+},{\mathrm{Na}}^{+},{\mathrm{Fe}}^{3+},{\mathrm{Cl}}^{–},{{\mathrm{SO}}_4}^{2-},{{\mathrm{PO}}_4}^{3-}$

Q. The IUPAC name of $K_2\left[Ni\right(CN{)}_4]$ and$K_2\left[Ni\right(Cl{)}_4]$ are :

1. potassium tetracyanonickelate(II), potassium tetrachloronickelate(II)
2. tetracyanopotassiumnickelate(II), tetrachloropotassiumnickelate(II)
3. tetracyanonickel(II), tetrachloronickel(II)
4. potassium tetracyanonickel(II), potassiumtetrachloronickel(II)

Q.

Arrange the following complexes in the increasing order of conductivity of their solution

$\left[Co\right(N{H}_3{)}_{3}C{l}_3],[Co\left(N{H}_3{)}_{4}C{l}_2\right]Cl,\left[Co\right(N{H}_3{)}_6]C{l}_3,[Co\left(N{H}_3{)}_{5}Cl\right]C{l}_2$

Q. The Correct IUPAC name of $H_2\left[PtC{l}_6\right]$ complex.

1. $\text{hexachloridoplatinic(IV) acid}$
2. $\text{hexachloridoplatinate(IV) acid}$
3. $\text{hydrogen hexachloridoplatinate(IV)}$
4. $\text{dihydrogenhexachloridoplpatinate(IV)}$

Q.

Why are the elements lithium, sodium and potassium called alkali metals?

1. Because they reacts with water to form alkali

2. Because they form acidic oxides

3. Because they are present in first group

4. Because they are less reactive in nature

Q.

Why is bivalent titanium ion paramagnetic?

Q. Assuming that $Ba(OH{)}_2$ is completely ionised in aqueous solution under the given conditions the concentration of $H_3{O}^{+}$ ions in 0.005 M acqueous solution of $Ba{\left(OH\right)}_{2}at298K$ is ______ $\times {10}^{-12}mol{L}^{-1}$. (Nearest integer)

Q.

Primary and secondary valency of $Pt$ in $\left[Pt\right(en{)}_{2}C{l}_2]$ are

1. 4, 4

2. 4, 6

3. 6, 4

4. 2, 6

Q. The magnitude of crystal field stabilization energy in octahedral field depends on

I : the nature of the ligand

II : the charge on the metal ion

III : the size of metal cation

1. $I,II,III\text{all are correct}$
2. $I,II\text{are correct}$
3. $I,III\text{are correct}$
4. $III\text{only correct}$

Q. Is B2 ( di-boron) a paramagnetic or diamagnetic species ? But if we consider the electronic configuration, the ninth electron would enter the pi- 2px and pi-2py , orbitals, then why we say that it is diamagnetic ?

Q. $Fe(OH{)}_3$ sol can be more easily coagulated by $N{a}_{3}P{O}_4$ in comparison to $KCl$ because:

1. Mass of $N{a}_{3}P{O}_4$ is more than $KCl$ hence it is more effective than $KCl$
2. Phospate ion $\left(P{O}^{3-}\right)$ has higher negative charge than $C{l}^{-}$ ion
3. $KCl$ is more soluble than $N{a}_{3}P{O}_4$ hence less effective for coagulation
4. $N{a}^{+}$ ions are more effective than $K^{+}$ ions for coagulation

Q. The number of ions present in $K_3\left[Fe\right(CN{)}_6]$ are

1. 3

2. 2

3. 10

4. 4

Q.

The actual formula of sodium chloride is:

1. $\mathrm{NaCl}$

2. ${\mathrm{Na}}^{+}{\mathrm{Cl}}^{-}$

3. ${\left({\mathrm{Na}}^{+}{\mathrm{Cl}}^{-}\right)}_{\mathrm{n}}$

4. ${\mathrm{Na}}_{\mathrm{n}}{\mathrm{Cl}}_{\mathrm{n}}$

Q. The number of ions formed in an aqueous solution by the complex $\left[Co\right(N{H}_3{)}_6]C{l}_3$ is

1. 12
2. 2
3. 4
4. 3

Q. Which of the following has highest conductivity in aqueous solution?

1. $\left[Co\right(N{H}_3{)}_4]C{l}_3$
2. $\left[Co\right(N{H}_3{)}_6]C{l}_2$
3. $\left[Ni\right(CO{)}_4]$
4. Cannot be predicted

Q.

Which is the strongest ligand?

1. Fluoride ion $\left(F^{-}\right)$

2. Chloride ion $\left(C{l}^{-}\right)$

3. Cyanide ion $\left({\mathrm{CN}}^{-}\right)$

4. Bromide Ion $\left({\mathrm{Br}}^{-}\right)$

Q. Which of the following forms, with an excess of $C{N}^{-}$, a complex having co-ordination number 2

1. $C{u}^{+}$
2. $A{g}^{+}$
3. $N{i}^{2+}$
4. $F{e}^{2+}$