Coordination compounds

Question 1

The colour of Jorgensen compound [ Co ( NH3)5 NO2]

Answer 1

Red

Question 2

The colour of Jorgensen compound [ Co ( NH3)5 ONO]

Answer 2

Yellow

Question 3

Jorgensen compounds exhibit

Answer 3

Linkage isomerism

Question 4

[ Cr(H2O)6] Cl3 colous is

Answer 4

Violet

Question 5

[Cr( H20)5 Cl]Cl2. H20 is

Answer 5

Grey green

Question 6

Bonds in coordination compounds have

Answer 6

Directional properties

Question 7

Ni(CO)4 is

Answer 7

Tertrahedral and diamagnetic

Question 8

A: hybrid orbitals do not actually exist
R: hybridization is the mathematical manipulation of wave equation of atomic orbitals involved

Answer 8

Both A and R are true and R is the correct explanation of A

Question 9

Magnetic moment of coordination compounds can be measure by

Answer 9

Magnetic susceptibility experiments

Question 10

Magnetic properties of coordination compounds is explained by

Answer 10

VB theory

Question 11

Which theory does not distinguish between strong and weak ligands

Answer 11

VB theory

Question 12

CFT consider coordination bond as

Answer 12

Ionic

Question 13

In octahedral coordination entity the ligands approach

Answer 13

Through axis

Question 14

Spectrochemical series

Answer 14

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I- , Br- ,SCN - , Cl -, S 2-, F-, OH - ,C2O4 2-, H20 , NCS - ,edta 4-, NH3 , en ,CN- , CO

Question 15

For weak ligand

Answer 15

Octahedral energy< pairing energy hence pairing occurs

Question 16

For strong ligand

Answer 16

Octahedral energy > pairing energy hence pairing does not occur

Question 17

Relation between octahedral splitting energy and tetrahedral splitting energy

Answer 17

Tertrahedral energy = 4/9 octahedral

Question 18

Why is g subscript not used for tetrahedral complex

Answer 18

Because they do not have centre of symmetry

Question 19

[ Co (CN)6] 3- absorb colour from

Answer 19

Ultraviolet region

Question 20

Crystal field splitting does not occur in absence of

Answer 20

Ligands

Question 21

[Ti( H2O)6]Cl3 renders colour only when

Answer 21

H20 molecules are there