The likelihood of s-block electrons to engage in chemical bonding diminishes as one travels down the group. Inert pair effect is the name given to this phenomenon. ns2 np1 are the electronic configurations of group 13 elements and +3 is the valency. The +1 oxidation state, on the other hand, becomes more stable as one moves down the group. Due to the ns2 electrons' inadequate shielding by the d- and f- electrons, this phenomenon occurs. ns2 electrons cannot participate in chemical bonding because of inadequate shielding.
Answered by Pragya Singh | 1 year ago