Choose the correct shape, weak or strong field, and number of unpaired electrons for [PtCl6]2-.
A) square planar, weak, 0
B) square planar, strong, 4
C) tetrahedral, weak, 0
D) octahedral, weak, 1
E) octahedral, weak, 4

Question

Quizplus · Accepted Answer

[PtCl6]2- is an octahedral complex, meaning it has six ligands arranged around the central platinum ion. The complex has weak-field ligands (Cl-) which means the splitting of the d orbitals is small, resulting in low energy for electrons to occupy the higher energy orbitals. This leads to the presence of four unpaired electrons in the d orbitals. Therefore, the correct choice is option E.

Choose the Correct Shape, Weak or Strong Field, and Number