P-Block Elements Ques 11
Question: Moissan boron is
[DCE 2003]
Options:
A) Amorphous boron of ultra purity
B) Crystalline boron of ultra purity
C) Amorphous boron of low purity
D) Crystalline boron of low purity
Show Answer
Answer:
Correct Answer: C
Solution:
Moissan boron is amorphous boron, obtained by reduction of $ B_2O_3 $ with Na or Mg. It has 95-98% boron and is black in colour.