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Electronic configuration of the element ...

Electronic configuration of the element with atomic number 56 and mass number 138 is

A

`[Xe]6s^(2)`

B

`[Kr]5s^(2)`

C

`[Xe]6s^(2)6p^(2)`

D

`[Xe]3d^(2)5d^(2)`

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The correct Answer is:
A
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