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Grade: 12

                        

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

4 years ago

Answers : (4)

Umakant biswal
5359 Points
							
@ 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 //
4 years ago
Arpan Sharma
24 Points
							Pcl5 is quite unstable due to electronic repulsion at axial bond. So to gain stability   it decomposes to cation and anion.
						
3 years ago
sjfigr
13 Points
							
Its [PCl4]+   and [PCl6]-
not[PCl4]- and [Pcl6]-                                                                                                                                                                                           the above given answer is wrong 
hope now it has cleared doubt
3 years ago
Yash Chourasiya
askIITians Faculty
246 Points
							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.
3 months ago
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