Advertisements
Advertisements
प्रश्न
What is the relationship between observed colour of the complex and the wavelength of light absorbed by the complex?
Advertisements
उत्तर
When white light falls on the complex, some part of it is absorbed. Higher the crystal field splitting, lower will be the wavelength absorbed by the complex. The observed colour of complex is the colour generated from the wavelength left over.
APPEARS IN
संबंधित प्रश्न
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
(NH4)2[CoF4]
Write IUPAC names of the following compounds:
Which of the following represents a chelate ligand?
Which of the following complexes are homoleptic?
(i) \[\ce{[Co(NH3)6]^{3+}}\]
(ii) \[\ce{[Co(NH3)4 Cl2]^{+}}\]
(iii) \[\ce{[Ni(CN)4]^{2-}}\]
(iv) \[\ce{[Ni(NH3)4Cl2]}\]
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. \[\ce{[Co(NH3)6]^{3+}}\] | 1. Violet |
| B. \[\ce{[Ti(H2O)6]^{3+}}\] | 2. Green |
| C. \[\ce{[Ni(H2O)6]^{2+}}\] | 3. Pale blue |
| D. \[\ce{(Ni(H2O)4 (en)]^{2+} (aq)}\] | 4. Yellowish orange |
| 5. Blue |
Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code:
| Column I (Compound) | Column II (Oxidation state of Co) |
| A. \[\ce{[Co(NCS)(NH3)5](SO3)}\] | 1. + 4 |
| B. \[\ce{[Co(NH3)4 CL2]SO4}\] | 2. 0 |
| C. \[\ce{Na4[Co(S2O3)3]}\] | 3. + 1 |
| D. \[\ce{[Co2(CO)8]}\] | 4. + 2 |
| 5. + 3 |
Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.
Reason: Unpaired electrons are present in their d-orbitals.
Oxidation number of cobalt in K[Co(CO)4] is
The co-ordinate number and the oxidation state of the element E in the complex [E(en)2(C2O4)]NO2 are respectively?
The oxidation number d-arbitral occupation and co-ordination number of Cr in the complex cis [Cr(en)2Cl2]Cl are respectively.
The complex which has no d electrons in the central atom is:-
How many ions are produced from the complex Co(NH3)6]Cl2 in solution?
The following ligand is:
Total sodium ions which are present in one formula unit of sodium ethane-1, 2-diaminetetraacetatochromate (II) and sodium hexanitrito cobaltate (III) are ______.
Assertion (A): EDTA is a hexadentate ligand.
Reason (R): EDTA has 2 nitrogen and 4 oxygen donor atoms.
Does ionization isomer for the following compound exist? Justify your answer.
\[\ce{Hg[Co(SCN)4]}\]
Explain with two examples of the following:
Ligand
Explain the following, giving two examples:
Homoleptic
