Question

why alluminium have high tendency of forming covalent compounds

Answer 1

$\huge\mathbb\red{ANSWER}$

$\large{\boxed{\sf Aluminium}}$

Explanation:

Instead , boron always form covalent compounds by sharing is valence . As we move from Boron to aluminium, the sum of first three ionization enthalpies decreases and thus aluminium has only little tendency to form ionic compounds. It has a strong tendency to form covalent compounds.

Al has high charge density and the electron cloud of chloride is distortable. ... Al3+ is highly charged in nature and it can polarise the electron clouds of Cl to a large extent. So, electrons get shared between the two ions. Hence the compound is a covalent one, but the bond is polar covalent.

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