Question

Statement I: Boron does not exhibit allotropy
Statement II: Boron is extremely hard and black coloured solid

• A. Both I \& II are correct
• B. Both I \& II are not correct
• C. I is correct but II is not correct
• D. I is not correct but II is correct

Hint:

Allotropy is common in elements like carbon, sulfur, and boron — be cautious with such general statements.

Answer 1

The Correct Option is D

Statement I is incorrect: Boron does exhibit allotropy (e.g., crystalline and amorphous forms).
Statement II is correct: Crystalline boron is extremely hard and appears black in color.