Give a real life example of inert pair effect - Chemistry - Classification of Elements and Periodicity in Properties

Question

Give a real life example of inert pair effect???

Geetha · Accepted Answer

Inert pair effect is the non participation of inner s electrons,
during the higher oxidation state of the element That is if an
element exist with +1 and +3 oxidation state, down the group the
elements exist most stable with +1 oxidation state only The higher
oxidation state is unstable as their inner s orbital electrons are
not participating Ex , 13 th group, B to Tl the elements are
expected to show +1 and +3 oxidation state, out of which down the
group the elements show +1 oxidation state (Ga to Tl)