A) Eu
B) La
C) Gd
D) Am
Correct Answer: D
Solution :
[d] Oxidation state shown by elements are as - \[La=+3\] |
Europium (Eu) and gadolium (Gd) = + 2 and +3 Americum (Am) = + 2, +3, + 4, + 5 and + 6 |
Am shows maximum number of different oxidation state due to its larger size and low ionisation energy |
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