Which of the following statements are correct? (A) The electronic configuration of Cr is [Ar] 3d5 4s1. (B) The magnetic quantum number may have a negative value. (C) In the ground state of an atom, the orbitals are filled in order of their increasing energies. (D) The total number of nodes are given by n $-$ 2. Choose the most appropriate answer from the options given below :

Question

Which of the following statements are correct?

(A) The electronic configuration of Cr is [Ar] 3d⁵ 4s¹.

(B) The magnetic quantum number may have a negative value.

(D) The total number of nodes are given by n $-$ 2.

Choose the most appropriate answer from the options given below :

(A), (C) and (D) only

(A) and (B) only

(A) and (C) only

(A), (B) and (C) only

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