Which of the 3d-series of transition elements exhibits the largestn number of oxidation states and why ?

Transition elements exhibit a large number of oxidation states.Explain.

Which of 3d-series of transition elements exhibits the large number of O.S. and why ?

Which of the following exhibits the greatest number of oxidation states?

Why transition elements form a large number of alloys ?

Explain :Transition elements exhibit variable oxidation states.

Which of the following transition element exhibit the oxidation state of +8?

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states ?

Name a transition element which does not exhibit variable oxidation states.