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JEE Main202330 Jan 2023Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

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:

Options

  1. AA - II, B - IV, C - I, D - III
  2. BA - I, B - III, C - IV, D - II
  3. CA - IV, B - III, C - II, D - I
  4. DA - IV, B - II, C - I, D - III

Correct answer

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

Step-by-step 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 ]   4 s 1 78   Pt d -block [ Xe ] 4 f 14 5 d 9 6 s 1 52   Te p -block [ Kr ]   4 d 10   5 s 2 5 p 4 65   Tb f -block [ Xe ]   4 f 9 6 s 2

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