You think probable to artificial radioactive elements considered transition metals.
element
Transition
Oxygen is a representative element because it belongs to a group. Also, it is not situated in the transition metals area, and most importantly, it's not a metal!
Promethium is a transition element.
So-called NON-transition metals is not a defined group of elements, other than "All other elements that are NOT transition elements".
plutonium
Nickel is not an inner transition element.
There is no sensible answer to the question because scandium IS a transition element.
No, xenon (Xe) is not a transition element. It is a group 18 element or noble gas.
Transition
Transition
Blank is not a name for a chemical element.