Coordination Chemistry - Tamil Nadu Board STD 12 Chemistry Questions - Vidyadip

Question types

Coordination Chemistry question types

304 questions across 6 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

304

Questions

6

Question groups

5

Question types

Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.

Fill In The Blanks.

[ 1 MARK QUESTIONS ]

[ 2 Marks Questions ]

[ 3 Marks Questions ]

[ 5 Marks Questions ]

Sample Questions

Coordination Chemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

In which of the following coordination entities the magnitude of $Δ_0$ will be maximum?

✓
$\left[ Co \left( CN \right)_6\right]^{3-}$
B
$\left[ Co \left( C _2 O_4 \right)_3\right]^{3-}$
C
$\left[ Co \left( H _2 O \right)_6\right]^{3+}$
D
$\left[ Co \left( NH_3 \right)_6\right]^{3+}$

Answer: A.

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Q 2Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

Crystal field stabilization energy for high spin $d ^5$ octahedral complex is____________.

A
$−0.6Δ_0$
✓
0
C
$2(P − Δ_0)$
D
$2(P + Δ_0)$

Answer: B.

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Q 3Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

A magnetic moment of 1.73 BM will be shown by one among the following

A
$TiCl _4$
B
${\left[ CoCl _{6-}\right]^{4-}}$
✓
${\left[ Cu \left( NH _3\right)_4\right]^{2+}}$
D
${\left[ Ni ( CN )_4\right]^{2-}}$

Answer: C.

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Q 4Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

IUPAC name of the complex $K _3\left[ Al \left( C _2 O _4\right)_3\right]$ is ____________.

A
potassiumtrioxalatoaluminium (III)
B
potassiumtrioxalatoaluminate (II)
✓
potassiumtrisoxalatoaluminate (III)
D
potassiumtrioxalatoaluminate (III)

Answer: C.

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Q 5Choose the most appropriate answer from the given alternatives and write the option code and the corresponding answer.1 Mark

As per IUPAC guidelines, the name of the complex $\left[ Co ( en )_2( ONO ) Cl \right] Cl$ is

A
chlorobisethylenediaminenitritocobalt (III) chloride
B
chloridobis (ethane-1, 2-diamine) nitro κ-Ocobaltate (III) chloride
C
chloridobis (ethane-1, 2-diammine) nitrito κ-Ocobalt (II) chloride
✓
chloridobis (ethane-1, 2-diammine) nitrito κ-Ocobalt (III) chloride

Answer: D.

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Q 6Fill In The Blanks.1 Mark

The enzyme important in digestion is …………….. contains …………….. coordinated to protein

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Q 7Fill In The Blanks.1 Mark

$CO ^{3+}$ is present in vitamin B 12 otherwise chemically called..........

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Q 8Fill In The Blanks.1 Mark

The green pigment chlorophyll contains …………….. ion surrounded by a modified porphyrin ligand called ……………..

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Q 9Fill In The Blanks.1 Mark

Ared blood corpuscles (RBC) is composed of heme group which …………….. complex play an important role in carrying oxygen from lungs to tissues.

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Q 10Fill In The Blanks.1 Mark

In photography, undecomposed AgBr forms a soluble complex called ……………..

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Q 11[ 1 MARK QUESTIONS ]1 Mark

Write the formula for the following coordination compound.

sodiumtetrafluoridodihydroxidochromate (III)

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Q 12[ 1 MARK QUESTIONS ]1 Mark

Write the formula for the following coordination compound.

hexaamminecobalt (III) sulphate

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Q 13[ 1 MARK QUESTIONS ]1 Mark

Write the formula for the following coordination compound.

pentaamminenitrito-κNcobalt (III) ion

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Q 14[ 1 MARK QUESTIONS ]1 Mark

Write the formula for the following coordination compound.

pentacarbonyl iron (0)

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Q 15[ 1 MARK QUESTIONS ]1 Mark

Write the formula for the following coordination compound.

potassiumhexacyanidoferrate (II)

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Q 16[ 2 Marks Questions ]2 Marks

Give one test to differentiate $\left[ Co \left( NH _3\right)_5 Cl \right] SO _4$ and $\left[ Co \left( NH _3\right)_5 SO _4\right] Cl$

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Q 17[ 2 Marks Questions ]2 Marks

Give an example for a complex of the type $\left[ Ma _2 b_2 c _2\right]$ where $a, b, c$ are monodentate ligands and give the possible isomers.

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Q 18[ 2 Marks Questions ]2 Marks

$\left[ Ti _{( }\left( H _2 O \right)_6\right]^{3+}$ is coloured, while $\left[ SC \left( H _2 O \right)_6\right]^{3+}$ is colourless - explain.

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Q 19[ 2 Marks Questions ]2 Marks

Draw all possible geometrical isomers of the complex $\left[ Co ( en ){ }_2 Cl _2\right]^{+}$ and identify the optically active isomer.

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Q 20[ 2 Marks Questions ]2 Marks

Based on VB theory explain why $\left[ Cr \left( NH _3\right)_6\right]^{3+}$ is paramagnetic, while $\left[ Ni ( CN )_4\right]^{2-}$ is diamagnetic.

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Q 21[ 3 Marks Questions ]3 Marks

Give an example of coordination compound used in medicine and two examples of biologically important coordination compounds.

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Q 22[ 3 Marks Questions ]3 Marks

Write the oxidation state, coordination number, nature of ligand, magnetic property and electronic configuration in octahedral crystal field for the complex $K _4\left[ Mn ( CN )_6\right]$

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Q 23[ 3 Marks Questions ]3 Marks

On the basis of VB theory explain the nature of bonding in $\left[ Co \left( C _2 O _4\right)_3\right]^{3-}$

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Q 24[ 3 Marks Questions ]3 Marks

Discuss briefly the nature of bonding in metal carbonyls.

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Q 25[ 3 Marks Questions ]3 Marks

A solution of $\left[ Ni \left( H _2 O \right)_6\right]^{2+}$ is green, whereas a solution of $\left[ Ni ( CN )_4\right]^2$ is colorless – Explain

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Q 26[ 5 Marks Questions ]5 Marks

Explain optical isomerism in coordination compounds with an example.

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Q 27[ 5 Marks Questions ]5 Marks

Write the postulates of Werner’s theory.

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Q 28[ 5 Marks Questions ]5 Marks

How to find out stability constant by stepwise method?

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Q 29[ 5 Marks Questions ]5 Marks

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereo – chemistry and magnetic moment of the complex.
1. $K \left[ Cr \left( H _2 O \right)_2\left( C _2 O _4\right)_2\right] \cdot 3 H _2 O$
2. $\left[ CO \left( NH _3\right)_5 Cl \right] Cl _2$
3. $CrCl _3( py )_3$
4. $Cs \left[ FeCl _4\right]$
5. $K _4\left[\operatorname{Min}( CN )_6\right]$

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Q 30[ 5 Marks Questions ]5 Marks

$\left[ Cr \left( NH _3\right)_6\right]^{3+}$ is paramagnetic while $\left[ Ni ( CN )_4\right]^{2-}$ is diamagnetic. Explain why?

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