List of top Chemistry Questions on The Actinoids

Which one of the following is an amphoteric oxide? 

Actinoid contraction is of greater extent then lanthanide contraction because :
Name the member of the Actinoid Series which is the last element:-

The incorrect statement among the following is

The reason for greater range of oxidation states in actinoids is attributed to
More number of oxidation state are exhibited by the actinoids than by lanthanoids. The main reason for this is :
Which of the following is not an actinoid?
The actinoids exhibits more number of oxidation states in general than the lanthanoids. This is because
To what radioactive family does $ P{{b}^{207}} $ belongs?
The inner transition elements are the elements in which the added electrons go to
The maximum oxidation state exhibited by actinide ions is