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JEE Main 202330 JanuaryMorning Shift
Exam
JEE Main
Year
2023
Date
30 January
Shift
Morning Shift
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2023 · 30 January · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties

Match List - I with List - II LIST-I (Atomic number) LIST-II (Block...

Match List - I with List - II

LIST-I
(Atomic number)
LIST-II
(Block of periodic
table)
(A) 3737 I. pp-block
(B) 7878 II. dd-block
(C) 5252 III. ff-block
(D) 6565 IV. ss-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)37\left(K\right) ss-block [Ar]4s1[ Ar ] 4{s}^{1}
78(Pt)78\left(Pt\right) dd-block [Xe]4f145d96s1[ Xe ] 4{f}^{14}5{d}^{9}6{s}^{1}
52(Te)52\left(Te\right) pp-block [Kr]4d105s25p4[ Kr ] 4{d}^{10}5{s}^{2}5{p}^{4}
65(Tb)65\left(Tb\right) ff-block [Xe]4f96s2[ Xe ] 4{f}^{9}6{s}^{2}
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