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Ncert Solutions Chemistry Class 12th

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9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Match the complex ions given in Column I with the hybridisation and number of unpaired electrons given in Column II and assign the correct code

Column I (Complex ion)

Column II (Hybrisization, number of unpaired electrons)

A. [Cr(H2O)6]3+ 

1. dsp2, 1

B. [Co(CN)4]2- 

2. sp3d2, 5

C. [Ni(NH3)6]2+ 

3. d2sp3, 3

D. [MnF6]4- 

4. sp3, 4
 

5. sp3d2, 2

Code

 (i) A (3)     B (1)      C (5)      D (2)

(ii) A (4)     B (3)      C (2)      D (1)

(iii) A (3)    B (2)      C (4)      D (1) 

(iv) A (4)     B (1)     C (2)     D (3)
0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

This is a Matching Type Questions as classified in NCERT Exemplar

Ans: Correct option: (ii)

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Match the coordination compounds given in Column I with the central metal atoms given in Column II and assign the correct code

Column I (Coordination Compound)

Column II (Central metal atom)

A. Chlorophyll

1. Rhodium

B. Blood pigment

2. Cobalt

C. Wilkinson catalyst

3. calcium

D. Vitamin B12

4. iron
 

5. magnesium

Code

(i)   A (5)     B (4)     C (1)     D (2)

(ii)  A (3)     B (4)     C (5)     D (1)

(iii) A (4)     B (3)     C (2)     D (1)

(iv) A (3)     B (4)     C (1)     D (2)
0 Follower 1 View

V
Vishal Baghel

Contributor-Level 10

This is a Matching Type Questions as classified in NCERT Exemplar

Ans: Correct option: (i)

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Match the complex ions given in Column I with the colours given in Column II and assign the correct code

Column I (Complex ion)

Column II (Colour)

A. [Co(NH3)6]3+ 

1. Violet

B. [Ti(H2O)6]3+ 

2. Green

C. [Ni(H2O)6]2+ 

3. Pale blue

D. [Ni(H2O)4(en]2+ (aq)

4. Yellowish orange
 

5. Blue

 

Code

(i) A (1)           B (2)          C (4)           D (5)

(ii) A (4)          B (3)          C (2)           D (1)

(iii) A (3)         B (2)          C (4)           D (1)

(iv) A (4)         B (1)          C (2)           D (3)
0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

This is a Matching Type Questions as classified in NCERT Exemplar

Ans: Correct option: (ii)

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Which of the following complexes show linkage isomerism?

A: [Co(NH3)5(NO2)]2+ 

B: [Co(H2O)5]3+ 

C: [Cr(NH3)5SCN]2+ 

D: [Fe(en)5Cl2]+
0 Follower 2 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct option: C

Coordination compounds with the same composition but varying ligand-metal connectivity are known as linkage isomerism.

[Co (NH3)5 (NO2)]2+ , NO2 has two donor sites N and O

[Cr (NH3)5SCN]2+ , S and N are two donor sites.

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Identify the correct statements for the behaviour of ethane-1, 2-diamine as a ligand.

A: It is a neutral ligand. 

B: It is a didentate ligand.

C: It is a chelating ligand. 

D: It is a unidentate ligand
0 Follower 4 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct options: A, B and C

Option A, B, and C describe that ethane-1, 2-diamine is a neutral ligand due to its lack of charge, a bidentate ligand due to the presence of two donor sites on one nitrogen atom, and a chelating ligand due to its ability to chelate with metal.

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Identify the optically active compounds from the following.

A: [Co(en)3]3+  

B: trans - [Co(en)2]+  

C: cis - [Co(en)2Cl2]+ 

D: [Cr(NH3)5Cl] 
0 Follower 5 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct option: A and C

Optical compounds are highly imposable compounds that lack symmetry components. As a result, Option A and C are mirror reflections of each other.

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Which of the following complexes are heteroleptic?

A: [Cr(NH3)6]3+ 

B: [Fe(NH3)4Cl]+ 

C: [Mn(CN)6]4- 

D: [Co(NH3)6Cl2]
0 Follower 1 View

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct option: B and D

Heteroleptic is a compound that contains many ligands of various sorts. NH3 and 

Cl as a ligand or also called as donor groups, is a heteroleptic complex.

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Which of the following complexes are homoleptic?

A: [Co(NH3)6]3+ 

B: [Co(NH3)4]+ 

C: 4[Ni(CN)4]2- 

D: [Ni(NH3)4Cl2]
0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct options: A, B and C

A homoleptic complex is one that has only one species or group as a ligand.

Option A, B, and C each have only one ligand, but option D has two.

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

An aqueous pink solution of cobalt (II) chloride changes to deep blue on addition of excess of HCl. This is because____________.

A: [Co(H2O)]2+ is transformed into [CoCl6]4- 

B: [Co(H2O)6]2+ is transformed into [CoCl4]2- 

C: Tetrahedral complexes have smaller crystal field splitting than octahedral complexes. 

D: Tetrahedral complexes have larger crystal field splitting than octahedral complex.
0 Follower 7 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct option: B and C

[Co (H2O)6]2+  is increased when excess of HCl is added. Tetrahedral complexes have smaller crystal field splitting than octahedral complexes because Δt = 4 9 Δ0

New answer posted

9 months ago

Ncert Solutions Chemistry Class 12th Coordination Compounds

Which of the following options are correct for [Fe(CN)6]3 -  complex?

A: d2sp3 hybridisation 

B: sp3d2 hybridisation

C: Paramagnetic 

D: Diamagnetic
0 Follower 3 Views

V
Vishal Baghel

Contributor-Level 10

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct option: A and C

For answer at (A) Atomic number of Iron is 26 . In ferricyanide complex, iron is in oxidation state of 3+. The orbitals on the metal atom undergoes d2sp3 hybridizaion and hence the complex has octahedral shape.

Also it can be said that, [Fe (CN)6]3- has one unpaired electron which makes it weakiy paramagnetic. Therefore, option C is also correct.

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