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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".
There is no sensible answer to the question because scandium IS a transition element.
Platinum is an element.
Transition
Transition
Transition
Platinum is a metal because its element category is transition metal.
platinum is a metal because it is shiny but it can be a metalloid or transition metal
The sixth period transition element with properties mist similar to Ni is platinum with symbol Pt, because both these elements are in Column 10 of a wide form periodic table.
Platinum is an element
By 'family' , I query your meaning. However, osmium is a d-clock element ( transition element) . It is Group 8 , Period 6.
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".
Platinum is an element.
Rhodium is a chemical element that is a rare, silvery-white, hard and chemically inert transition metal and a member of the platinum group.
Nickel is not an inner transition element.