Amorphous boron and crystalline boron are extracted by reducing Boric anhydride () with different me — p Block Elements Chemistry Question
Question
Amorphous boron and crystalline boron are extracted by reducing Boric anhydride ($B_2O_3$) with different metals. Which of the following pairs is correct?
Answer: A
💡 Solution & Explanation
Amorphous boron (low purity) is prepared by reducing $B_2O_3$ with highly active metals like Magnesium or Sodium at high temperatures. Crystalline boron is obtained by reducing $B_2O_3$ with Aluminium.
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