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प्रश्न
How is Benzonitrile converted to Benzophenone?
How is benzophenone prepared from benzonitrile?
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उत्तर
Benzonitrile reacts with phenyl magnesium bromide in equimolecular proportion in the presence of dry ether to give an adduct, which on acid hydrolysis gives benzophenone
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संबंधित प्रश्न
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complex:
[Mn(H2O)6]SO4
Write applications of co-ordination compounds in medicine and electroplating.
Write structures of compounds A, B and C in of the following reactions
Complete the following reactions
NH3+3Cl2(excess) ---->
Write the structures of compounds A, B and C in the following reactions:
Write the IUPAC name of the following coordination compound:
[Cr(NH3)4(H2O)2]Cl3
Write the IUPAC name of the following coordination compound:
[PtCl2(NH3)4][PtCl4]
Which of the following represents a chelate ligand?
A group of atoms can function as a ligand only when:
The oxidation number of Fe in K4[Fe(CN)6] is ____________.
What is the coordination number of chromium in \[\ce{[Cr(NH3)2(H2O2)2]Cl3}\]?
The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?
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 |
What is the relationship between observed colour of the complex and the wavelength of light absorbed by the complex?
Which one of the following does not achieve an octet of electrons in the central atom?
The nature of hybridisation in the ammonia molecule is
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:-
According to IUPAC nomenclatures, sodium nitroprusside is named as
Why chelate complexes are more stable than complexes with unidentate ligands?
Does ionization isomer for the following compound exist? Justify your answer.
\[\ce{Hg[Co(SCN)4]}\]
Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.
What is meant by the chelate effect? Give an example.
What is meant by the chelate effect? Give an example.
Explain the ligand.
Explain the following, giving two examples:
Homoleptic
