In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?
C2 → C2+
NO → NO+
O2 → O2+
O2 → O2+
B.
NO → NO+
D.
O2 → O2+
C2 → C2+ electron is removed from bonding molecular orbital so bond order decreases. In NO → NO+, electron is removed from antibonding molecular orbital so bond order increases and nature changes from paramagnetic to diamagnetic.
The coordination number and the oxidation state of the element ‘E’ in the complex [E(en)2(C2O4)]NO2 (where(en) is ethylene diamine) are, respectively,
6 and 2
4 and 2
4 and 3
4 and 3
Which of the following molecules is expected to rotate the plane of plane-polarised light?
The number of stereoisomers possible for a compound of the molecular formula CH3-CH =CH-(OH)-Me is
3
2
4
4
The alkene that exhibits geometrical isomerism is
propene
2-methyl propene
2-butene
2-butene
In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of ∆o be the highest?
[Co(CN)6]3−
[Co(C2O4)3]3−
[Co(H2O)6]3+
[Co(H2O)6]3+
Which of the following pairs represents linkage isomers?
[Cu(NH3)4][PtCl4] and [Pt(NH3)4][CuCl4]
[Pd(PPh3)2(NCS)2] and [Pd(PPh3)2(SCN)2]
[CO(NH3)5NO3]SO4 and [CO(NH3)5SO4]NO3
[CO(NH3)5NO3]SO4 and [CO(NH3)5SO4]NO3
Which of the following has an optical isomer ?
[CO(en)(NH3)2]2+
[CO(H2O)(en)]3+
[CO(H2O)(en)]3+
Which one of the following has a square planar geometry?
[CoCl4]2-
[FeCl4]2–
[NiCl4] 2–
[NiCl4] 2–
