Question:

Which of the following statements about anhydrous aluminium chloride is correct?

Updated On: Jul 7, 2022

It exists as $\ce{AlCl_3}$ molecules
It is not easily hydrolysed
It sublimes at $100^\circ$ C under vacuum
It is a strong Lewis base

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The Correct Option is C

Solution and Explanation

$ {AlCl_3}$ exists as a dimer $ {(Al_2Cl_6)}$. It is a strong Lewis acid as it has an incomplete octet and has a tendency to gain electrons. $ {AlCl_3}$ undergoes hydrolysis easily and forms an acidic solution. $ {AlCl_3 + 3H2O -> Al(OH)3 + 3HCl}$

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Notes on p -Block Elements

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