Multiple Choice QuestionsCH3-CHCl-CH2-CH3 has a chiral centre. Which one of the following represents its R configuration?
The d-electron configuration of Cr3+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(At. no. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
[Mn(H2O)6]2+
[Fe(H2O)6]2+
[Ni(H2O)6]2+
[Ni(H2O)6]2+
In which of the following pairs are both the ions coloured in aqueous solution?
(At. no.: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 2)
Ni2+, Ti3+
Sc3+, Ti3+
Sc3+,Co2+
Sc3+,Co2+
Which of the following is not chiral
2-butanol
2,3 -dibromo pentane
3- bromopentane
3- bromopentane
[Co(NH3)4(NO2)2]Cl exhibits:
linkage isomerism, ionisation isomerism and optical isomerism
Linkage isomerism, ionisation isomerism and geometrical isomerism
ionization isomerism, geometrical isomerism and optical isomerism
ionization isomerism, geometrical isomerism and optical isomerism
B.
Linkage isomerism, ionisation isomerism and geometrical isomerism
The compound [Co(NH3)4((NO2)2]Cl exhibits linkage, ionisation and geometrical isomerism.
Hence, its linkage isomers are
(i) [Co(NH3)2(NO2)2]Cl and [Co(NH3)4(ONO)2]Cl
(ii) Its ionisation isomers are
[Co(NH3)4 (NO2)Cl]NO2 and [Co(NH3)4(NO2)2]Cl
(iii) Its geometrical isomers are
[Cr(H2O)6]Cl3 (at. no. of Cr = 24) has a magnetic moment of 3.83 BM, the correct distribution of 3d electrons in the chromium of the complex is:
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 6 is:
2
3
4
4
An example of a sigma bonded organometallic compound is :
Ruthenocene
Grignard's reagent
Ferrocene
Ferrocene
The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes: CoCl3.6NH3, CoCl3.5NH3, CoCl3.4NH3 respectively is
1 AgCl, 3 AgCl, 2 AgCl
3 AgCl, 1 AgCl, 2 AgCl
3 AgCl, 2 AgCl, 1 AgCl
3 AgCl, 2 AgCl, 1 AgCl
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co3+ is
[Co(en)3]3+, [Co(NH3)6]3+, [Co(H2O)6]3+
[Co(H2O)6]3+, [Co(en)3]3+, [Co(NH3)6]3+
[Co(H2O)6]3+, [Co(NH3)6]3+, [Co(en)3]3+
[Co(H2O)6]3+, [Co(NH3)6]3+, [Co(en)3]3+
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