Name a member of the lanthanoid series which is well known to exhibit $+4$ oxidation state.
- ACerium
- BLanthanum
- CGadolinium
- DPromethium
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Which actinoid from the following in its $+3$ state has the largest size?
Which of the following ions is the strongest oxidizing agent? [ Atomic Number of $Ce = 58, Eu = 63, Tb = 65, Lu = 71$ ]
The $f$ orbitals are half-filled and completely filled,respectively,in which of the following lanthanide ions?
(Given: Atomic numbers: $Eu=63, Sm=62, Tm=69, Tb=65, Yb=70, Dy=66$)
(Given: Atomic numbers: $Eu=63, Sm=62, Tm=69, Tb=65, Yb=70, Dy=66$)
Which of the following elements shows the maximum number of different oxidation states in its compounds?
MediumAIPMT 1998
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