The heavier elements of groups 13 and 14 besides the group oxidation state exhibit another oxidationstate which is two units lower than the group oxidationstate and the stability of this lower oxidation state increases down the group. This conceptwhich is commonly called inert pair effect has been used to explainmany physical and chemical properties of the elementof these groups. Element of group 13

The heavier elements of groups 13 and 14 besides the group oxidation s

1.	The heavier elements of groups 13 and 14 besides the group oxidation state exhibit another oxidationstate which is two units lower than the group oxidationstate and the stability of this lower oxidation state increases down the group. This conceptwhich is commonly called inert pair effect has been used to explainmany physical and chemical properties of the elementof these groups. Element of group 13
Answer» exhibit oxidationstate of `+3` only form `M^(+)` and `M^(3+)` IONS exhibit oxidationstates of +1 and +3 form `M^(-)` and `M^(+)` ions Solution :SINCE compound in +3 oxidation stateare more covalent, THEREFORE, they do notform `M^(3+)` ions.