Match List-I (Atomic number) with List-II (Block of periodic table):

List-I: (A) 37, (B) 78, (C) 52, (D) 65

List-II: I. p-block, II. d-block, III. f-block, IV. s-block

| List-I (Atomic number) | Li

Question

Match List-I (Atomic number) with List-II (Block of periodic table):

List-I: (A) 37, (B) 78, (C) 52, (D) 65

List-II: I. p-block, II. d-block, III. f-block, IV. s-block

| List-I (Atomic number) | List-II (Block) |
|------------------------|-----------------|
| (A) 37 | (I) p-block |
| (B) 78 | (II) d-block |
| (C) 52 | (III) f-block |
| (D) 65 | (IV) s-block |

Choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

🧠 The last filled subshell decides the block
s-block: last electron in s. p-block: last electron in p. d-block: last electron in d. f-block: last electron in f.

🗺️ Work through each atomic number
(A)  (Rb):  → last electron in  → s-block (IV).
(B)  (Pt):  → last electron in  → d-block (II).
(C)  (Te):  → last electron in  → p-block (I).
(D)  (Tb):  → last electron in  → f-block (III).

Matching: A-IV, B-II, C-I, D-III.

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