Match List - I with List - II LIST-I (Atomic number) LIST-II (Block of periodic table) (A) 37 I. p -block…

Match List - I with List - II

LIST-I
(Atomic number)
LIST-II
(Block of periodic
table)
(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:

  1. A - II, B - IV, C - I, D - III
  2. A - I, B - III, C - IV, D - II
  3. A - IV, B - III, C - II, D - I
  4. A - IV, B - II, C - I, D - III

Solution

The orbital where the last electron enters defines the block in the periodic table where the elements belong to:
 
Atomic number Block Electronic Configuration
37 K s-block [Ar] 4s1
78 Pt d-block [Xe]4f145d96s1
52 Te p-block [Kr] 4d10 5s25p4
65 Tb f-block [Xe] 4f96s2

Asked in: JEE Main 2023 (30 Jan Shift 1)

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