Consider the following satements :
`S_(1): ` Generally square planare complexes show geometrical isomerism but do not exhibit optical isomerism because thy do not possess plane of symmetry .
`S_(2): Delta_(t)=(4)/(9)Delta_(0)`
`S_(3)`: In octahedral complexes each electron entering teh `t_(2g)` orbitals stabilizes the complex ion by 0.4 `Delta_(0)` and each electron entering teh `e_(g)` orbital destabilizes the complex by an amount of 0.6 `Delta_(0)`
Select the correct statement from the codes given below.

Options

A. `S_(1) and S_(3)` are correct
B. `S_(2) and S_(3)` are correct
C. `S_(1)` is incorrect
D. `S_(2) and S_(3)` are incorrect

Answer

B, C

Explanation

`S_(1)`: Square planar complexes with symmetrical ligands like (en) do not show geometrical isomerism and they have plane of symmetry, so optically inactive.
`S_(2) and S_(3)` are correct statements.