____________Boron is reactive with air.(a) Neither crystalline nor amorphous(b) Crystalline(c) Both crystalline and amorphous(d) AmorphousI have been asked this question by my college director while I was bunking the class.My query is from p-Block Elements in section p-Block Elements of Chemistry – Class 11

____________Boron is reactive with air.(a) Neither crystalline nor amo

1.	____________Boron is reactive with air.(a) Neither crystalline nor amorphous(b) Crystalline(c) Both crystalline and amorphous(d) AmorphousI have been asked this question by my college director while I was bunking the class.My query is from p-Block Elements in section p-Block Elements of Chemistry – Class 11
Answer» The correct choice is (d) AMORPHOUS Easiest explanation: CRYSTALLINE Boron is unreactive whereas amorphous Boron is reactive. It REACTS with air at 700-degree centigrade, boron combines with oxygen and nitrogen separately to form its oxide and nitride.

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