The electronic configuration of bivalent...

The electronic configuration of bivalent Europium and trivalent cerium respectively is: (Atomic Number: Xe = 54, Ce = 58, Eu = 63)

A

`[Xe]4f^7`, `[Xe]4f^1`

B

`[Xe]4f^7 6s^2`, `[Xe]4f^1`

C

`[Xe]4f^7 6s^2, [Xe]4f^1 5d^1 6s^2`

D

`[Xe]4f^7, [Xe]4f^1 5d^1 6s^2`

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The correct Answer is:

A

NA

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