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Gadolinium belongs to 4f series. Its ato...

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium ?

A

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

B

[Xe] `4f^(6) 5d^(2) 6s^(2)`

C

[Xe] `4f^(8) 6d^(2)`

D

[Xe] `4f^(9) 5s^(1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Gd : `[Xe]^(54) 4f^(7) 6s^(2)` because of extra stability of half filled f-subshell.
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MODERN PUBLICATION-CHEMISTRY OF D-AND F-BLOCK ELEMENTS-Multiple Choice Questions (Level-II)
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