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Which of the following statements is cor...

Which of the following statements is correct?

A

The electronic configuration of Cr is `[Ar] 3d^(5) 4s^(1)` (Atomic No. of Cr = 24)

B

The magnetic quantum number may have a negative value

C

In silver atom 23 electrons have a spin of one type and 24 of the opposite type, (Atomic No. of Ag = 47)

D

All of the above

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The correct Answer is:
D
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