Which of the following statements are correct?

(A) The electronic configuration of Cr is .
(B) The magnetic quantum number may have a negative value.
(C) In the ground state of an atom, the orbitals

Question

Which of the following statements are correct?

(A) The electronic configuration of Cr is .
(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 energy order.
(D) The total number of nodes are given by .

Choose the most appropriate answer:

Canvas Classes · Accepted Answer

Evaluate each:

(A) ✓ Cr (Z=24) has  — half-filled 3d is extra stable.

(B) ✓  ranges from  to , so negative values are allowed.

(C) ✓ Aufbau principle — orbitals fill in order of increasing energy.

(D) ✗ Total nodes =  (not ). For example, 2s has 1 node (), not 0.

Correct: (A), (B), (C) → Answer: Option (4)

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