Which of the following statements is correct?

Options

A. The electronic coniguration 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

Answer

D