The halides of transition elements become more covalent with increasing oxidation state of the metal. Why?

The halides of transition elements become more covalent with increasing oxidaiton state of the metal . Why ?

The halides of transition elements become more covalent with increasing oxidation state of metal. Why ?

Why does transition metals form complexes at different oxidation states ?

Why do transition elements exhibit more than one oxidation state (varlable oxidation states) ?

In the first row transition metals, the element that exhibits only +3 oxidation state is

Though Sc is a transition element, it does not exhibit variable oxidation state. Why ?

Why do transition elements show variable oxidation state?