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How does PCl5 exist in solid state? Why in the form of [PCl4+][PCl6-]???

How does PCl5 exist in solid state? Why in the form of [PCl4+][PCl6-]???

Grade:12

4 Answers

Umakant biswal
5359 Points
5 years ago
@ surahi 
in solid state pcl5 prefer to exist as oppositely charged ions like [pcl4]- and [pcl6]- as the ionic bonding enhances the crystalline nature . 
also [pcl4]- is tetrahedral , while [pcl6]- is octahedral . these structure fit well into each other providing extra stability to solid structure . 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST //
Arpan Sharma
24 Points
4 years ago
Pcl5 is quite unstable due to electronic repulsion at axial bond. So to gain stability it decomposes to cation and anion.
sjfigr
13 Points
4 years ago
Its [PCl4]+   and [PCl6]-
not[PCl4]- and [Pcl6]-                                                                                                                                                                                           the above given answer is wrong 
hope now it has cleared doubt
Yash Chourasiya
askIITians Faculty 256 Points
one year ago
Hello Student

In solid state PCl5 exist in ionic form.

it exist as a diamer .

i.e. [PCl4]+ [PCl6]-in which [PCl4]+ is tetrahedral and [PCl6]- is octahedral.

Because PCl5 is quite unstable due to electronic repulsion at axial bond. So these structure fit well into each other providing extra stability to solid structure.

I hope this answer will help you.

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