AIIMS 2006
- Exam
- AIIMS
- Year
- 2006
- Subject
- Chemistry
- Chapter
- Coordination Compounds
AIIMS 2006 · Chemistry · Coordination Compounds
Among the following, the species having square planar geometry for...
Among the following, the species having square planar geometry for central atom are (i) , (ii) , (iii) \left[\mathrm{NiCl}_4\right]^{2-}
Options
- A(i) and (iv)
- B(i) and (ii)
- C(ii) and (iii)
- D(iii) and (iv).
Correct answer
A. (i) and (iv)
Step-by-step solution
hybridisation, shape is square planar instead of octahedral due to presence of two lone pair of electrons on atom. molecule shows hybridisation but its expected trigonal bipyramidal geometry gets distorted due to presence of a lone pair of electrons and it becomes distorted tetrahedral or see-saw with the bond angles
equal to instead of the expected angles of respectively.
Experiments have, however, shown that 4coordinated complexes of (II) are diamagnetic . Thus it is hybridisation which is involved in the formation of ion i.e. 4coordinated complexes of Pd(II) have square planar geometry with (diamagnetic).
Experiments have, however, shown that 4coordinated complexes of (II) are diamagnetic . Thus it is hybridisation which is involved in the formation of ion i.e. 4coordinated complexes of Pd(II) have square planar geometry with (diamagnetic).