Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
p-Block Elements/
Question 760002
JEE Chemistry · Easy

p-Block Elements: Boron anomaly MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Boron anomalyEasyQuestion 760002

Question

Boron differs from the rest of Group 13 elements because:
  1. A
    It is a non-metal/metalloid and forms covalent compounds
    Correct
  2. B
    It is a gas
  3. C
    It has +3 oxidation state only
  4. D
    It forms ionic B³⁺ ions readily

Correct answer

It is a non-metal/metalloid and forms covalent compounds

Explanation

Boron is a metalloid with a very high charge density (small size, +3 charge). It cannot form B³⁺ ions — the ionisation energy is too high. It forms covalent compounds (BCl₃, B₂H₆) instead.

Review p-Block Elements notesStart timed chapter practice