Which of the following metal (s) show (s) +1and +3 oxidation states both?
Ga
In
Tl
All of these
Ga ,In and Tl exhibits +1 and+3 oxidation states.
InTl+1 and Tl +3 ;Tl+3 oxidation state is unstable due to inert pair effect so in +3 state it acts as oxidiszng agent