According to werner, the arrangement of 6 groups around the metal centre within the co-ordination sphere can lead to three possible geometries (For Q. 1 and Q. 2) : planar hexagon, trigonal prism and octahedral. For a particular geometry, if the groups (i.e. ligands) are arranged in different ways then the possibility of geometrical isomerism will arise.
If in RENREW'S universe, `[PtBrCl(NH_(3))Py]` complex was found to have two stereo-isomers, then according to Werner, which inference can be correct ?
(P) Complex must be square planar
(Q) Complex may be tetrahedral
(R ) Complex may show geometrical isomerism
(S) Complex must exhibit optical isomerism

Options

A. P, Q
B. Q, R
C. Q, S
D. P,S

Answer

B

Explanation

Mabcd can show G.I. if planar. Also, it can show O.I. if tetrahedral.