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Periodic Table and Periodicity question

2024 · 8 Apr · Shift 1 · Q9
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Periodic Table and Periodicity question

2024 · 8 Apr · Shift 1 · Q9

JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
Match List I with List II

LIST I
(Elements)		 LIST II
(Properties in their respective groups)
A. Cl,S\mathrm{Cl,S}Cl,S I. Elements with highest electronegativity
B. Ge,As\mathrm{Ge,As}Ge,As II. Elements with largest atomic size
C. Fr,Ra\mathrm{Fr,Ra}Fr,Ra III. Elements which show properties of both metals and non-metal
D. F,O\mathrm{F,O}F,O IV. Elements with highest negative electron gain enthalpy

Choose the correct answer from the options given below:

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

Correct answer: D

  1. We identify the property for each pair in List I.

  2. A. Cl, S\mathbf{A.\ Cl,\ S}A. Cl, S

    • In their respective groups:
      • Cl\mathrm{Cl}Cl (Group 17) has the highest negative electron gain enthalpy in its group.
      • S\mathrm{S}S (Group 16) also has the highest negative electron gain enthalpy in its group.
    • This is because although fluorine and oxygen are more electronegative, due to very small size their electron gain enthalpy is less negative than chlorine and sulfur respectively.
    • Hence, A→IVA \to IVA→IV.

  3. B. Ge, As\mathbf{B.\ Ge,\ As}B. Ge, As

    • Germanium (Ge\mathrm{Ge}Ge) and arsenic (As\mathrm{As}As) are metalloids.
    • Metalloids show properties of both metals and non-metals.
    • Hence, B→IIIB \to IIIB→III.

  4. C. Fr, Ra\mathbf{C.\ Fr,\ Ra}C. Fr, Ra

    • Down a group, atomic size increases.
    • Francium (Fr\mathrm{Fr}Fr) in Group 1 and radium (Ra\mathrm{Ra}Ra) in Group 2 have the largest atomic size in their respective groups.
    • Hence, C→IIC \to IIC→II.

  5. D. F, O\mathbf{D.\ F,\ O}D. F, O

    • Fluorine and oxygen are the most electronegative elements in Groups 17 and 16 respectively.
    • Hence, D→ID \to ID→I.

  6. Final matching:

A−IV,B−III,C−II,D−IA-IV,\quad B-III,\quad C-II,\quad D-IA−IV,B−III,C−II,D−I
  1. Comparing with options:
  • This corresponds to Option D.
  1. Comparison with stored correct answer:
  • Stored correct answer = D
  • Derived answer = D
  • Therefore, they agree.
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