Xef6 is distorted octahedral but tecl62- is a regular octahedron although they are isoelectronic?

Question

Answer

Reasons for the difference in geometry between XeF6 and [TeCl6]2-

Electronic Configuration:
- XeF6 has 8 valence electrons around the central Xe atom, leading to sp3d3 hybridization and a distorted octahedral geometry.
- [TeCl6]2- also has 8 valence electrons, but due to the larger atomic size of Te compared to Xe, the Te-Cl bond lengths are longer, resulting in a regular octahedral geometry.

Size of the Central Atom:
- The larger size of the Te atom in [TeCl6]2- leads to longer Te-Cl bond lengths compared to Xe-F bond lengths in XeF6.
- This difference in bond lengths affects the overall geometry of the molecule, with [TeCl6]2- favoring a regular octahedral shape due to less steric repulsion.

Electron Repulsion:
- In XeF6, the small size of the Xe atom leads to increased electron-electron repulsions, causing distortion from a perfect octahedral geometry.
- On the other hand, the larger Te atom in [TeCl6]2- experiences less electron-electron repulsion, allowing for a more symmetrical arrangement of ligands around the central atom.

Similar Chemistry Doubts

Geometry andpoint group regarding [ZrMe6]2

The structure of XeF6 is

For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be

Which of the following do not show geometrical isomerism? (Assume all ligands are unidentat e)

How many nearest, neighbours are there in an atom or ions for an octahedral hole of a closed packed structure ? Correct answer is '6'. Can you explain this answer?

Top Courses for Chemistry

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams