The property/properties that show irregularity in first four elements of group-17 is/are (A) Covalent radius (B) Electron affinity (C) Ionic radius (D) First ionization energy Choose the correct answer from the options given below:

Chemistry · p-Block Elements (Group 15-18)

JEE Main 2025 — 2 April, Morning Shift — Question 13

The property/properties that show irregularity in first four elements of group-17 is/are

(A) Covalent radius

(B) Electron affinity

(D) First ionization energy

Choose the correct answer from the options given below:

Exception in electron affinity only

Electron affinity order :

$\mathrm{Cl}>\mathrm{F}>\mathrm{Br}>\mathrm{I}$

Answer key and solution verified before publishing.

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