Which of the following statements are correct? (A) The electronic configuration of Cr is [ Ar ] 3 d 5 4 s 1. (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 ] 3 d 5 4 s 1. (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: (A) (A), (C) and (D) only (B) (A) and (B) only (C) (A) and (C) only (D) (A), (B) and (C) only

Tardigrade Admin · Accepted Answer

(A) Cr =[ Ar ] 3 d 5 4 s 1 (B) m=-ℓ to +ℓ (C) According to Aufbau principle, orbitals are filled in order of their increasing energies. (D) Total nodes = n -1

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

(A) and (B) only

(A) and (C) only

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

(A) Cr=[Ar]3d54s1 (B) m=−ℓ to +ℓ (C) According to Aufbau principle, orbitals are filled in order of their increasing energies. (D) Total nodes =n−1

(A) $C r = [A r] 3 d^{5} 4 s^{1}$
(B) $m = - ℓ$ to $+ ℓ$
(C) According to Aufbau principle, orbitals are filled in order of their increasing energies.
(D) Total nodes $= n - 1$