Which of the following statement (s) are (are) correct?

Options

A. The electronic configuration of Cr is `[Ar] 3d^(5) 4s^(1)` (Atomic number 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 number of Ag = 47)
D. The oxidation state of nitrogen in `NH_(3)` is -3

Answer

A, B, C

Explanation

`[In HN_(3)O.N. "of" N = -1//3]`