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

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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.



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