Account for the following :
The lowest oxide of transition metal is basic whereas the highest oxide is amphoteric or acidic.

(a) Account for the following : (i) Transition metals form large number of complex compounds (ii) The lowest oxide of transition metal is basic whereas the highest oxide is amphoteric or acidic (iii) E^(@) value for the Mn^(3+)//Mn^(2+) couple is highly positive (+1.57V) as compare to Cr^(3+)//Cr^(2+) (b) Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.

Magnesium oxide is an amphoteric oxide.

Which of the following oxide is amphoteric ?

Which transition metal shows the highest oxidation state ?