Coordination Compounds Test

Result

Coordination Compounds Test - 56

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The conjugate base of $$[Al(H_2O)_3(OH)_3]$$ is

A
$$[Al(H_2O)_3(OH)_2]^+$$

B
$$[Al(H_2O)_3(OH)_2]^-$$

C
$$[Al(H_2O)_3(OH)_3]^-$$

D
$$[Al(H_2O)_2(OH)_4]^-$$
Question 2
1 / -0

In quantitative analysis of second group in lab., $$ H _ { 2 } S $$ gas is passed in acidic medium for ppt. When $$ \mathrm { Cu } ^ { + 2 } $$ and $$ \mathrm { Cd } ^ { + 2 } $$ react with $$ \mathrm { KCN } $$, then in which of the following condition, ppt will not be formed due to relative stability.

A
$$ K _ { 2 } \left[ \mathrm { Cu } ( \mathrm { CN } ) _ { 4 } \right] \text { - More stable } \mathrm { K } _ { 2 } \left[ \mathrm { Cd } ( \mathrm { CN } ) _ { 4 } \right] - \text { Less stable } $$

B
$$ K _ { 2 } \left[ \mathrm { Cu } ( \mathrm { CN } ) _ { 4 } \right] - \text { Less stable } \quad \mathrm { K } _ { 2 } \left[ \mathrm { Cd } ( \mathrm { CN } ) _ { 4 } \right] - \text { More stable } $$

C
$$ K _ { j } \left[ \mathrm { Cu } ( \mathrm { CN } ) _ { 4 } \right] \text { - More stable } \quad \mathrm { K } _ { 2 } \left[ \mathrm { Cd } ( \mathrm { CN } ) _ { 4 } \right] - \text { Less stable } $$

D
$$ \mathrm { K } _ { \mathrm { J } } \left[ \mathrm { Cu } ( \mathrm { CN } ) _ { 4 } \right] - \text { Less stable } \quad \mathrm { K } _ { \mathrm { J } } \left[ \mathrm { Cd } ( \mathrm { CN } ) _ { 4 } \right] - \text { More stable } $$

Solution
Question 3
1 / -0

Select the correct statement

A
$$ (C{ H }_{ 3 }{ ) }_{ 3 }\bar { C } $$ is pyramidal while $$\bar { C } (CN{ ) }_{ 3 }$$ is planar

B
$$ \bar { C } (CN{ ) }_{ 3 }$$ is Pyramidal while $$\bar { C } (C{ H }_{ 3 }{ ) }_{ 3 }$$ is plannar

C
both $$ \bar { C } (CN{ ) }_{ 3 }$$and $$\bar { C } (C{ H }_{ 3 }{ ) }_{ 3 }$$ are planar

D
both $$ \bar { C } (CN{ ) }_{ 3 }$$and $$ \bar { C } (C{ H }_{ 3 }{ ) }_{ 3 }$$ are Pyramidal
Question 4
1 / -0

Which of the following ligands is not a chelating agent?

A
EDTA

B
En

C
Oxalate

D
Pyridine

Solution
Question 5
1 / -0

Which of these statements about $$[Co(CN)_{6}]^{3-}$$ is true?

A
$$[Co(CN)_{6}]^{3-}$$ has zero unpaired electrons and will be in a low-spin configuration.

B
$$[Co(CN)_{6}]^{3-}$$ has four unpaired electrons and will be in a high-spin configuration.

C
$$[Co(CN)_{6}]^{3-}$$ has zero unpaired electrons and will be in a high-spin configuration.

D
$$[Co(CN)_{6}]^{3-}$$ has four unpaired electrons and will be in a low-spin configuration.

Solution

Oxidation no. of $$Co$$ is +3 and electronic configuration of $$Co^{3+}$$ = $$3d^6$$

As $$CN$$ is a strong field ligand, so all electrons will be paired up and the complex will be low spin complex.
Question 6
1 / -0

$$[Fe(H_{2}O)_{6}]^{+2}$$ has a crystal field splitting energy value of $$10,400\ cm^{-1}$$ and a pairing energy value of $$17,600\ cm^{-1}$$. Then, the compound is:

A
a low spin complex

B
paramagnetic in nature

C
diamagnetic in nature

D
none of these

Solution
Question 7
1 / -0

In the co-ordination compound $$Na_{4}$$$$[Fe)CN)_{5}NOS]$$ oxidation state of $$Fe$$ is:

A
+1

B
+2

C
+3

D
+4

Solution

$$Na_{4}[Fe(CN)_{5}NO]$$
$$[Fe(CN)_{5}NO]^{-4}$$
NO is a natural ligand thus it's
oxidation state is 'O'
Let oxidation state of Fe is 'x'
$$(x\times 1)+5\times (-1)=-4$$
$$x=-4+5$$
$$x=+1$$
Oxidation state of Fe is +1 in above
compound.
Question 8
1 / -0

The correct order of increasing s-character (in percentage) in the hybrid orbitals of following molecules and ions is

(I) $$CO_{3}^{2-}$$ (II) $$XeF_{4}$$ (III) $$I_{3}^{-}$$ (IV) $$NCl_{3}$$ (V) $$BeCl_{2}$$

A
$$II < III < IV < I < V$$

B
$$II < III < IV < V < I$$

C
$$III < II < I < V < IV$$

D
$$II < IV < III < I < V$$

Solution
Question 9
1 / -0

Select the incorrect statement.

A
Crystal field stabilisation energy of $$d^2$$ configuration in an octahedral complex of a weak field ligand is $$-0.8\triangle _o$$.

B
$$[MnF_6]^{4-}$$ is an example of a coordination compound having a weak field ligand and $$d^5$$ configuration.

C
Effective atomic number of Pt in $$[PtCl_6]^{2-}$$ is 84.

D
Geometrical isomerism is shown by $$[Pt(NH_3)_4Cl_2]$$.

Solution
Question 10
1 / -0

Identify the correct statement(s) regarding $$[Cr(en)_{2}]^{+}$$ and $$[Co(C_{2}O_{4})_{2}(NH_{3})_{2}]$$ complex ions:
(i) Both are chelate complexes
(ii) Both have octahedral geometry
(iii) Both are low spin complexes
(iv) Both contain metal-carbon bond i.e. , they are organometallic compounds

A
I,III,IV

B
I,II

C
II,III

D
I,II,III