JEE Main 2022 · 29 Jun · Shift 1 · Chemistry Q62

ChemistrySingle correct+4 / -1Question 62 of 90

Which of the following statements are correct ?

(A) The electronic configuration of Cr is [Ar] 3d $^5$ 4s $^1$ .

(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

Answer and worked solution

Official answer: D

Check. (A) true. (B) true ( $m_l$ from $-l$ to $l$ ). (C) true (Aufbau). (D) false: total nodes are $n-1$ .

(D)

Topics:Quantum numbers Electronic configuration

JEE Main 2022 · 29 Jun · Shift 1, Chemistry question 62