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  • The electronic configurations of bivalent europium and trivalent cerium are : (atomic number : Xe = 54, Ce = 58, Eu = 63)  Option: 1</st

The electronic configurations of bivalent europium and trivalent cerium are :

(atomic number : Xe = 54, Ce = 58, Eu = 63)

 

Option: 1

[Xe]4f^{7}\ and\ [Xe]4f^{1}


Option: 2

[Xe]4f^{7}6s^{2}\ and\ [Xe]4f^{2}6s^{2}


Option: 3

[Xe]4f^{2}\ and\ [Xe]4f^{7}


Option: 4

[Xe]4f^{4}\ and\ [Xe]4f^{9}


Answers (1)

best_answer

The electronic configurations are given as 

Eu2+ : [Xe]4f7
Ce3+ : [Xe]4f1

Hence, the option number (1) is correct.

 

Posted by

Rishabh

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