Name a transition element which has no variable oxidation state?

2 Answers
Jun 23, 2018

Answer:

I can't think of one offhand mate....

Explanation:

The transition elements, generally have several oxidation states available. For the first transition series, #M(+II)# and #M(+III)# salts are widespread....

The f-block elements, and Group 3 of the transition series, are GENERALLY #M(+III)#, however, even here, #M(0)#, #M(+I)#, and #M(+II)# salts and complexes are accessible, even if special means have to be employed to synthesize and isolate them...

Jun 23, 2018

Answer:

Probably no element except the lighter noble gases is limited to one oxidation state at all times, but scandium and yttrium, both transition metals, come close.

Explanation:

Nearly all elements, even alkali and alkaline earth metals, can show "unusual oxidation states under the right conditions. But scandium and yttrium are in the +3 oxidation state under almost all commonly encountered conditions.