Why the compounds in +1 O.S , as expected from energy consideration,
are more ionic than those in +3 oxidation state? (in group 13 as we go down the group).

Dear student
Please find the solution to the asked query:

The Group 13 family adopts oxidation states +3 or +1. 
When ns electron do not participate in chemical bonding while (n-1)d electron participate due to poor shielding on ns electron. Then the inertness of ns electron is known as inert pair effect.
The compounds with +1 oxidation state are more ionic than +3 oxidation state in terms of energy considerations.
In trivalent oxidation state, most of the compounds are covalent and hence hydrolyzed in water, but in the +1 oxidation state, the compounds have reluctance to lose electrons and hence have more strength compared to covalent compounds and hence they behave ionic in nature.



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  • -2
There is +1 and +3 O.S
  • -3
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