Coordination Compounds Test

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Coordination Compounds Test - 71

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Weekly Quiz Competition

Question 1
1 / -0

Which would exhibit co-ordination isomerism?

A
$$[Cr(NH_3)_6][Co(CN)_6]$$

B
$$[Co(en)_2Cl_2]$$

C
$$[Cr(NH_3)_6]Cl_3$$

D
$$[Cr(en)_2Cl_2]^+$$
Question 2
1 / -0

Which of the following statements is incorrect?

A
Complex $$\left [ Co\left ( NH_{3} \right )_{4}\left ( H_{2}O \right )Cl \right ]Br_{2}$$ can show both hydrate as well as ionization isomerism.

B
Complex $$\left [ Co\left ( NH_{3} \right )_{5}\left ( H_{2}O \right ) \right ]\left ( NO_{3} \right )_{3}$$ can show hydrate isomerism.

C
Complex $$\left [ Pt\left ( NH_{3} \right )_{4} \right ]\left [ PtCl_{6} \right ]$$ cannot show coordination isomerism.

D
$$\left [ Co\left ( NH_{3} \right )_{4}\left ( NO_{2} \right )Cl \right ]Cl$$ can show both ionization a well as linkage isomerism.

Solution
Question 3
1 / -0

The substance used in cancer therapy is

A
Rn

B
Ni

C
Fe

D
Co

Solution

Cobalt-60 isotope is used in cancer therapy.
Question 4
1 / -0

In solid $$ CuSO_4. 5H_2O $$ copper is co-ordinated to

A
five water molecules

B
four water molecules

C
one sulphate anion

D
one water molecule

Solution

$$ CuSO_4.5H_2O $$ is a crystalline salt. Four $$ H_2 O $$ molecules attach to copper forming a square planar symmetry. The fifth water molecule is attached through hydrogen bonding between one of the co-ordinated water molecules and one of the sulphate ion.
Question 5
1 / -0

In coordination compound $$[Co(en)_2Cl_2]Cl$$ which is false?

A
Show geometrical isomerism

B
Show optical isomerism

C
Shown ionic isomerism

D
A octahedral complex

E
A cationic complex

Solution

When coordinate compounds give different ions in solution then it produces ionic isomerism while this situation is not present in $$[Co(en)_2Cl_2]Cl$$.

$$[Co(en)_2Cl_2]Cl\to [Co(en)_2Cl_2]^++Cl^-$$

Complex ion shows geometrical isomerism and cis form shows optical isomerism. An octahedral complex since there are six donor atom and complex part is cation.
Question 6
1 / -0

$$[Pt(NH_{3})_{4}]Cl_{2}$$ is

A
Square planar

B
Tetrahedral

C
Pyramidal

D
Pentagonal

Solution

$$[Pt(NH_3)_4]Cl_2\to Pt^{2+}\to [Xe]5d^86s^0$$. Due to the presence of the ligand pairing of electrons take place.

Since hybridisation is $$dsp^{2}$$ so it is square planar.
Question 7
1 / -0

Which of the following statements is incorrect?

A
In $$K_3[Fe(CN)_6]$$, the ligand has satisfied only the secondary valency of ferric ion.

B
In $$K_3[Fe(CN)_6]$$, the ligand has satisfied both the primary and secondary valencies of ferric ion.

C
In $$K_4[Fe(CN)_6]$$, the ligand has satisfied both the primary and secondary valencies of ferric ion.

D
In $$[Cu(NH_3)_4]SO_4$$, the ligand has satisfied only the secondary valency of ferric ion.

Solution

In $$K_3[Fe(CN)_6,$$ the ligand are negatively charged which is present in coordination spheres shows a dual behaviour. It may satisfied both primary & secondary valencies while neutral ligand satisfied only secondary valencies.
Question 8
1 / -0

Heamoglobin is a complex of

A
$$Fe^{3+}$$

B
$$Fe^{2+}$$

C
$$Fe%_4++$$

D
$$Cu^{2+}$$

Solution
Question 9
1 / -0

The formula of alum is

A
$$K_2SO_4.Al_2(SO_4)_3. 24H_2O$$

B
$$K_2[Fe(CN)_6]$$

C
$$K_2SO_4.Al_2(SO_4)_3. 6H_2O$$

D
$$Na_2CO_3. 10H_2O$$

Solution

General formula for alum is $$M_2SO_4. R_2(SO_4)_3 .24H_2O$$

$$M=$$ mono valent cation $$(K^+ , Na^+,....)$$

$$R=$$ Trivalent cation $$(Al^{3+} , Fe^{3+},......)$$

Hence, $$K_2SO_4.Al_2(SO_4)_2.24H_2O$$ represent an alum.
Question 10
1 / -0

The pair of complex compounds $$[Cr(H_2O)_6]Cl_3$$ and $$[Cr(H_2O)_5Cl]Cl_2H_2O$$ are an example of

A
Linkage isomerism

B
Ionization isomerism

C
Coordination isomerism

D
Hydrate isomerism

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Coordination Compounds Test - 71

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Coordination Compounds Test - 71

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Question 1

$$[Cr(NH_3)_6][Co(CN)_6]$$

$$[Co(en)_2Cl_2]$$

$$[Cr(NH_3)_6]Cl_3$$

$$[Cr(en)_2Cl_2]^+$$

Question 2

Complex $$\left [ Co\left ( NH_{3} \right )_{4}\left ( H_{2}O \right )Cl \right ]Br_{2}$$ can show both hydrate as well as ionization isomerism.

Complex $$\left [ Co\left ( NH_{3} \right )_{5}\left ( H_{2}O \right ) \right ]\left ( NO_{3} \right )_{3}$$ can show hydrate isomerism.

Complex $$\left [ Pt\left ( NH_{3} \right )_{4} \right ]\left [ PtCl_{6} \right ]$$ cannot show coordination isomerism.

$$\left [ Co\left ( NH_{3} \right )_{4}\left ( NO_{2} \right )Cl \right ]Cl$$ can show both ionization a well as linkage isomerism.

Solution

Question 3

Rn

Ni

Fe

Co

Solution

Question 4

five water molecules

four water molecules

one sulphate anion

one water molecule

Solution

Question 5

Show geometrical isomerism

Show optical isomerism

Shown ionic isomerism

A octahedral complex

A cationic complex

Solution

Question 6

Square planar

Tetrahedral

Pyramidal

Pentagonal

Solution

Question 7

In $$K_3[Fe(CN)_6]$$, the ligand has satisfied only the secondary valency of ferric ion.

In $$K_3[Fe(CN)_6]$$, the ligand has satisfied both the primary and secondary valencies of ferric ion.

In $$K_4[Fe(CN)_6]$$, the ligand has satisfied both the primary and secondary valencies of ferric ion.

In $$[Cu(NH_3)_4]SO_4$$, the ligand has satisfied only the secondary valency of ferric ion.

Solution

Question 8

$$Fe^{3+}$$

$$Fe^{2+}$$

$$Fe%_4++$$

$$Cu^{2+}$$

Solution

Question 9

$$K_2SO_4.Al_2(SO_4)_3. 24H_2O$$

$$K_2[Fe(CN)_6]$$

$$K_2SO_4.Al_2(SO_4)_3. 6H_2O$$

$$Na_2CO_3. 10H_2O$$

Solution

Question 10

Linkage isomerism

Ionization isomerism

Coordination isomerism

Hydrate isomerism

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