Question:
In solid state $PCl_5$ is a _______.
In solid state $PCl_5$ is a _______.
Updated On: Jul 6, 2022
- covalent solid
- octahedral structure
- ionic solid with $[PCl_6]^+$ octahedral and $[PCl_4]^-$ tetrahedral
- ionic solid with $[PCl_4]^+$ tetrahedral and $[PCl_6]^-$ octahedral
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The Correct Option is D
Solution and Explanation
In solid state $PCl _{5}$ tries to exist as oppositely charged ions like
(1) $PCl _{4}^{+}$ and $(2) PCl _{6}^{-}$ as the ionic bonding enhances the crystalline nature. also $P Cl _{4}^{+}$ is tetrahedral, while $PCl _{6}^{-}$ is octahedral these structure fit well into each other which gives more stability to solid structure. Hence option D is correct.
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Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family