The element with maximum number of oxidation states in their compounds is

Why do transition elements show variable oxidation states ? Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z= 30).

The element of Group VA that exhibits maximum number of oxidation states in its compounds

Which of the following elements shows maximum number of different oxidation states in its compounds ?

Which one of the following elements shows maximum number of different oxidation states in its compounds?

Which of the following elements shows maximum number of different oxidation states in its compounds ? (a)Eu (b)La (c)Gd (d)Am

Which element exhibits the greatest number of oxidation states in its compounds?