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Which of the following are correct ?...

Which of the following are correct ?

A

The configuration of Mo`(Z = 42)` is [Kr] `4d^(5) 5s^(1)`

B

The configuration of Mo(Z= 42) is [Kr] `4d^(4) 5s^(2)`

C

The configurtion of Ag(Z = 47) is [Kr] `4d^(10) 5s^(1)`

D

The configurationof Ag (Z= 47) is [Kr] `4d^(10) 5s^(2)`

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The correct Answer is:
A, C, D
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