JEE Main · 2024 · 09 Apr 2024 · Shift 2 · Atomic Structure

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Match List I with List II:
List-I (Element): A. N B. S C. Br D. Kr
List-II (Electronic Configuration): I. [Ar] 3d¹⁰ 4s² 4p⁵ II. [Ne] 3s² 3p⁴ III. [He] 2s² 2p³ IV. [Ar] 3d¹⁰ 4s² 4p⁶
Choose the correct answer from the options given below:

(A)A-IV, B-III, C-II, D-I
(B)A-III, B-II, C-I, D-IV✓ Correct
(C)A-I, B-IV, C-III, D-II
(D)A-II, B-I, C-IV, D-III

Answer: (B)

Solution

(A) N (Z=7):

[He] 2 s^{2} 2 p^{3}

— matches III.

(B) S (Z=16):

[Ne] 3 s^{2} 3 p^{4}

— matches II.

(C) Br (Z=35):

[Ar] 3 d^{10} 4 s^{2} 4 p^{5}

— matches I.

(D) Kr (Z=36):

[Ar] 3 d^{10} 4 s^{2} 4 p^{6}

— matches IV.

Matching: A–III, B–II, C–I, D–IV.

JEE Main · 2024 · 09 Apr 2024 · Shift 2 · Single correct option

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