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ChemistryJEE Main 23 Jan 2026, Shift 1·Q19·MCQ·Easy–moderate

p-Block (13–14) · Group 13 periodic trends

The correct statements from the following are :
  • (A)Ionic radii of trivalent cations of group 13 elements decrease down the group.
  • (B)Electronegativity of group 13 elements decreases down the group.
  • (C)Among the group 13 elements, Boron has highest first ionisation enthalpy.
  • (D)The trichloride and triiodide of group 13 elements are covalent in nature.
Choose the correct answer from the options given below :
  1. (1)A and C only
  2. (2)A and D only
  3. (3)C and D only
  4. (4)B and D only
We corrected a printing error in the original paper

Source printed “Ionic radii … decreases down the group” and “from the otpions given below”.

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See the full 23 Jan 2026, Shift 1 paper