What is a bidentate ligand? Give one example.

When a ligand has two donor atoms which may simultaneously coordinate to the metal atom are known as didentate or bidentate ligands. Didentate ligands are also called chelating ligands. Examples of didentate ligands include ethane-1,2-diammine, oxalate ion, glycinate ion, etc.

E M B I B E

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 14

EASY

12th West Bengal Board

IMPORTANT

Earn 100

Give the number of unpaired electrons in ${[Fe {(F)}_{6}]}^{4 -}$ and ${[Fe {(CN)}_{6}]}^{4 -}$

Important Questions on Coordination Compounds

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 15

The spin only magnetic moment of

[{MnBr}_{4}]^{2 -}

is

5.9 BM

. Predict the geometry of the complex ion?

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 15

Explain why a chelating complex is more stable than unchelated complex?

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 16

{[F e {(H_{2} O)}_{6}]}^{3 +}

is strongly paramagnetic whereas,

{[F e {(C N)}_{6}]}^{3 -}

is weakly paramagnetic. Explain.

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 17

Explain

{[Co {({NH}_{3})}_{6}]}^{3 +}

is an inner orbital complex whereas

{[Ni {({NH}_{3})}_{6}]}^{2 +}

is an outer orbital complex.

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 18

Predict the number of unpaired electrons in the square planar

{[P t {(C N)}_{4}]}^{2 -}

ion.

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 19

The hexaaquamanganese

(II)

ion contains five unpaired electrons while the hexacyano ion contains only one unpaired electron. Explain using Crystal Field Theory.

MEDIUM

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 20

Calculate the overall complex dissociation equilibrium constant for the

{[Cu {({NH}_{3})}_{4}]}^{2 +}

ion, given that

β_{4}

for this complex is

2.1 \times 10^{13}

.

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 9 - Coordination Compounds>REVIEW EXERCISES>Q 1

Explain with two examples each of the following: coordination entity, ligand, coordination number, coordination polyhedron, homoleptic and heteroleptic.